Overview of philosophy


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Overview of philosophy

  1. 1. Overview of Philosophy
  2. 2. Branches of Philosophy • Philosophy is often divided into four main branches: metaphysics, the investigation of ultimate reality; epistemology, the study of the origins, validity, and limits of knowledge; ethics, the study of the nature of morality and judgment; and aesthetics, the study of the nature of beauty in the fine arts. • Usually, when we say philosophy, we talk about Western philosophy from the Greek tradition to the European and American thought
  3. 3. Other Philosophies • Chinese Philosophy; Confucius and later thinkers (Confucius thought that the way to reform society was to cultivate ethical behavior in individuals, especially in rulers and their ministers because leaders serve as important role models for their people) • Islam; • Buddhism; • Daoism (Taoism);
  4. 4. • Islam – guided by Koran or the Muslim bible • In the Arabic language, the word Islam means “surrender” or “submission”—submission to the will of God. A follower of Islam is called a Muslim, which in Arabic means “one who surrenders to God.” The Arabic name for God, Allah, refers to the God worshiped by Jews and Christians. Islam’s central teaching is that there is only one all-powerful, all-knowing God, and this God created the universe. This rigorous monotheism, as well as the Islamic teaching that all Muslims are equal before God, provides the basis for a collective sense of loyalty to God that transcends class, race, nationality, and even differences in religious practice. Thus, all Muslims belong to one community, the umma, irrespective of their ethnic or national background.
  5. 5. • Five Pillars of Islam, called arkan in Arabic, five ritual duties that mainstream Muslims view as central to their faith. These are :(1) pronouncing the confession of faith (shahada or kalima); (2) performing the five daily prayers (salat); (3) fasting during the month of Ramadan (saum); (4) paying the alms tax (zakat); (5) and performing, at least once in life, the major pilgrimage to Mecca (hajj).
  6. 6. • Buddhism - a major world religion, founded in northeastern India and based on the teachings of Siddhartha Gautama, who is known as the Buddha, or Enlightened One • Buddhism today is divided into two major branches known to their respective followers as Theravada, the Way of the Elders, and Mahayana, the Great Vehicle. Followers of Mahayana refer to Theravada using the derogatory term Hinayana, the Lesser Vehicle.
  7. 7. • At the core of the Buddha’s enlightenment was the realization of the Four Noble Truths: (1) Life is suffering. This is more than a mere recognition of the presence of suffering in existence. It is a statement that, in its very nature, human existence is essentially painful from the moment of birth to the moment of death. Even death brings no relief, for the Buddha accepted the Hindu idea of life as cyclical, with death leading to further rebirth. (2) All suffering is caused by ignorance of the nature of reality and the craving, attachment, and grasping that result from such ignorance. (3) Suffering can be ended by overcoming ignorance and attachment. (4) The path to the suppression of suffering is the Noble Eightfold Path, which consists of right views, right intention, right speech, right action, right livelihood, right effort, right-mindedness, and right contemplation. These eight are usually divided into three categories that form the cornerstone of Buddhist faith: morality, wisdom, and samadhi, or concentration.
  8. 8. • Daoism (Taoism) - The second great philosophy of the classical age was Daoism (Taoism). The traditional view is that Daoism was founded by Laozi (Lao-tzu), who was presumably a contemporary of Confucius and wrote the Daodejing (“Classic of the Way and Its Virtue”). However, many scholars today believe that there was no single person who wrote the Daodejing, but rather that it is an anthology of sayings by different authors and was composed as late as the 3rd century BC. The Daodejing often talks about the dao (“way”), an entity that both creates the world and determines how things should live.
  9. 9. Schools in Philosophy • • • • • • • • • • Ionian School The Pythagoran School The Heraclitean School The Eleatic School The Pluralists The Atomists The Sophists Socratic Philosophy Platonic Philosophy Aristotelian Philophy
  10. 10. Ionian School • The first philosopher of historical record was Thales, who lived in the 6th century BC in Miletus, a city on the Ionian coast of Asia Minor. Thales, who was revered by later generations as one of the Seven Wise Men of Greece, was interested in astronomical, physical, and meteorological phenomena. His scientific investigations led him to speculate that all natural phenomena are different forms of one fundamental substance, which he believed to be water because he thought evaporation and condensation to be universal processes.
  11. 11. Ionian School • Anaximander, a disciple of Thales, maintained that the first principle from which all things evolve is an intangible, invisible, infinite substance that he called apeiron, “the boundless.” • The third great Ionian philosopher of the 6th century BC, Anaximenes, returned to Thales’s assumption that the primary substance is something familiar and material, but he claimed it to be air rather than water.
  12. 12. Ionian School • In general, the Ionian school made the initial radical step from mythological to scientific explanation of natural phenomena. It discovered the important scientific principles of the permanence of substance, the natural evolution of the world, and the reduction of quality to quantity.
  13. 13. Pythagorean School • About 530 BC at Croton (now Crotona), in southern Italy, the philosopher Pythagoras founded a school of philosophy that was more religious and mystical than the Ionian school. It fused the ancient mythological view of the world with the developing interest in scientific explanation. The system of philosophy that became known as Pythagoreanism combined ethical, supernatural, and mathematical beliefs with many ascetic rules, such as obedience and silence and simplicity of dress and possessions. The Pythagoreans taught and practiced a way of life based on the belief that the soul is a prisoner of the body, is released from the body at death, and migrates into a succession of different kinds of animals before reincarnation into a human being.
  14. 14. Heraclitean School • Heraclitus of Ephesus, who was active around 500 BC, continued the search of the Ionians for a primary substance, which he claimed to be fire. He noticed that heat produces changes in matter, and thus anticipated the modern theory of energy. Heraclitus maintained that all things are in a state of continuous flux, that stability is an illusion, and that only change and the law of change, or Logos, are real.
  15. 15. Eleatic School • In the 5th century BC, Parmenides founded a school of philosophy at Elea, a Greek colony on the Italian peninsula. Parmenides took a position opposite from that of Heraclitus on the relation between stability and change. Parmenides maintained that the universe, or the state of being, is an indivisible, unchanging, spherical entity and that all reference to change or diversity is self-contradictory. According to Parmenides, all that exists has no beginning and has no end and is not subject to change over time.
  16. 16. Pluralists • The speculation about the physical world begun by the Ionians was continued in the 5th century BC by Empedocles and Anaxagoras, who developed a philosophy replacing the Ionian assumption of a single primary substance with an assumption of a plurality of such substances. Empedocles maintained that all things are composed of four irreducible elements: air, water, earth, and fire, which are alternately combined and separated by two opposite forces, love and strife.
  17. 17. Atomists • It was a natural step from pluralism to atomism, the theory that all matter is composed of tiny, indivisible particles differing only in simple physical properties such as size, shape, and weight. This step was taken in the 4th century BC by Leucippus and his more famous associate Democritus, who is generally credited with the first systematic formulation of an atomic theory of matter.
  18. 18. Atomists • The fundamental assumption of Democritus’s atomic theory is that matter is not infinitely divisible but is composed of numerous indivisible particles that are too small for human senses to detect. His conception of nature was thoroughly materialistic (focused on physical aspects of matter), explaining all natural phenomena in terms of the number, shape, and size of atoms. He thus reduced the sensory qualities of things, such as warmth, cold, taste, and odor, to quantitative differences among atoms—that is, to differences measurable in amount or size.
  19. 19. Sophists • Toward the end of the 5th century BC, a group of traveling teachers called Sophists became famous throughout Greece. • Lacking the education of the aristocrats, they sought to prepare themselves for politics and commerce by paying the Sophists for instruction in public speaking, legal argument, and general culture. Although the best of the Sophists made valuable contributions to Greek thought, the group as a whole acquired a reputation for deceit, insincerity, and demagoguery.
  20. 20. Sophists • The famous maxim of Protagoras, one of the leading Sophists, that “man is the measure of all things,” is typical of the philosophical attitude of the Sophist school. Protagoras claimed that individuals have the right to judge all matters for themselves.
  21. 21. Socratic Philosophy • Socrates left no written work and is known through the writings of his students, especially those of his most famous pupil, Plato. Socrates maintained a philosophical dialogue with his students until he was condemned to death and took his own life. • He often taught in agora or the marketplace
  22. 22. Socratic Philosophy • He concluded that, in matters of morality, it is best to seek out genuine knowledge by exposing false pretensions. Ignorance is the only source of evil, he argued, so it is improper to act out of ignorance or to accept moral instruction from those who have not proven their own wisdom. Instead of relying blindly on authority, we should unceasingly question our own beliefs and the beliefs of others in order to seek out genuine wisdom.
  23. 23. Socratic Philosophy • The philosopher’s task, Socrates believed, was to provoke people into thinking for themselves, rather than to teach them anything they did not already know. His contribution to the history of thought was not a systematic doctrine but a method of thinking and a way of life. He stressed the need for analytical examination of the grounds of one’s beliefs, for clear definitions of basic concepts, and for a rational and critical approach to ethical problems.
  24. 24. Platonic Philosophy • Like Socrates, Plato regarded ethics as the highest branch of knowledge; he stressed the intellectual basis of virtue, identifying virtue with wisdom. • Plato also explored the fundamental problems of natural science, political theory, metaphysics, theology, and theory of knowledge, and developed ideas that became permanent elements in Western thought. • He founded the Academy
  25. 25. Platonic Philosophy • The basis of Plato’s philosophy is his theory of Ideas, also known as the doctrine of Forms. The theory of Ideas, which is expressed in many of his dialogues, particularly the Republic and the Parmenides, divides existence into two realms, an “intelligible realm” of perfect, eternal, and invisible Ideas, or Forms, and a “sensible realm” of concrete, familiar objects. Trees, stones, human bodies, and other objects that can be known through the senses are for Plato unreal, shadowy, and imperfect copies of the Ideas of tree, stone, and the human body.
  26. 26. Platonic Philosophy • Plato’s theory of Ideas and his rationalistic view of knowledge formed the foundation for his ethical and social idealism. The realm of eternal Ideas provides the standards or ideals according to which all objects and actions should be judged. The philosophical person, who refrains from sensual pleasures and searches instead for knowledge of abstract principles, finds in these ideals the basis for personal behavior and social institutions.
  27. 27. Aristotelian Philosophy • Aristotle, who began study at Plato’s Academy at age 17 in 367 BC, was the most illustrious pupil of Plato, and ranks with his teacher among the most profound and influential thinkers of the Western world. After studying for many years at Plato’s Academy, Aristotle became the tutor of Alexander the Great. • He founded the Lyceum or the Peripatetic School
  28. 28. Aristotelian Philosophy • Aristotle defined the basic concepts and principles of many of the sciences, such as logic, biology, physics, and psychology. In founding the science of logic, he developed the theory of deductive inference—a process for drawing conclusions from accepted premises by means of logical reasoning. His theory is exemplified by the syllogism (a deductive argument having two premises and a conclusion), and a set of rules for scientific method.
  29. 29. Aristotelian Philosophy • In his metaphysical theory, Aristotle criticized Plato’s theory of Forms. Aristotle argued that forms could not exist by themselves but existed only in particular things, which are composed of both form and matter. He understood substances as matter organized by a particular form. • The soul, for Aristotle, is the form of the body, and humans, whose rational soul is a higher form than the souls of other terrestrial species, are the highest species of perishable things.
  30. 30. Aristotelian Philosophy • The standards of personal and social behavior, according to Aristotle, must be found in the scientific study of the natural tendencies of individuals and societies rather than in a heavenly or abstract realm of pure forms. • In his theory of knowledge, Aristotle rejected the Platonic doctrine that knowledge is innate and insisted that it can be acquired only by generalization from experience.
  31. 31. Hellenistic and Roman Philosophy • • • • Epicureanism Stoicism Skepticism Neoplatonism
  32. 32. Epicureanism • In 306 BC Epicurus founded a philosophical school in Athens. Because his followers met in the garden of his home they became known as philosophers of the garden. Epicurus adopted the atomistic physics of Democritus, but he allowed for an element of chance in the physical world by assuming that the atoms sometimes swerve in unpredictable ways, thus providing a physical basis for a belief in free will. The overall aim of Epicurus’s philosophy was to promote happiness by removing the fear of death.
  33. 33. Stoicism • The Stoic school, founded in Athens about 310 BC by Zeno of Citium, developed out of the earlier movement of the Cynics, who rejected social institutions and material (worldly) values. • The Stoics taught that one can achieve freedom and tranquility only by becoming insensitive to material comforts and external fortune and by dedicating oneself to a life of virtue and wisdom.
  34. 34. Skepticism • The school of Skepticism, which continued the Sophist criticisms of objective knowledge, dominated Plato’s Academy in the 3rd century BC. The Skeptics discovered, as had Zeno of Elea, that logic is a powerful critical device, capable of destroying any positive philosophical view, and they used it skillfully. Their fundamental assumption was that humanity cannot attain knowledge or wisdom concerning reality, and they therefore challenged the claims of scientists and philosophers to investigate the nature of reality.
  35. 35. Skepticism • The Skeptics concluded that the way to happiness lies in a complete suspension of judgment. They believed that suspending judgment about the things of which one has no true knowledge creates tranquility and fulfillment.
  36. 36. Neoplatonism • During the 1st century AD the Jewish-Hellenistic philosopher Philo of Alexandria combined Greek philosophy, particularly Platonic and Pythagorean ideas, with Judaism in a comprehensive system that anticipated Neoplatonism and Jewish, Christian, and Muslim mysticism. Philo insisted that the nature of God so far transcended (surpassed) human understanding and experience as to be indescribable; he described the natural world as a series of stages of descent from God, terminating in matter as the source of evil. He advocated a religious state, or theocracy, and was one of the first to interpret the Old Testament for the Gentiles.
  37. 37. Neoplatonism • Neoplatonism, one of the most influential philosophical and religious schools and an important rival of Christianity, was founded in the 3rd century ad by Ammonius Saccus and his more famous disciple Plotinus. Plotinus based his ideas on the mystical and poetic writings of Plato, the Pythagoreans, and Philo. The main function of philosophy, for him, is to prepare individuals for the experience of ecstasy, in which they become one with God. God, or the One, is beyond rational understanding and is the source of all reality.
  38. 38. Link to Encarta Encyclopedia • Medieval Philosophy – Augustinian Philosophy – Scholasticism – Medieval Philosophy after Aquinas
  39. 39. Modern Philosophy • Mechanics and Materialism – – – – Decartes Hobbes Spinoza Locke • Idealism and Skepticism – – – – Leibniz Berkeley Hume Kant
  40. 40. 19th-Century Philosophy • • • • • • • Hegel Schopenhauer Nietzche Kierkegaard Bentham and Mill Karl Marx and Marxism Pragmaticism
  41. 41. 20th-Century Philosophy • • • • • • • • Phenomenology Existentialism Analytic Philosophy Postmodern Philosophy Feminist Philosophy Environmental Philosophy Contemporary Political Philosophy Applied Ethics
  42. 42. Source: Microsoft ® Encarta ® 2009. © 1993-2008 Microsoft Corporation. All rights reserved.