1. Philosophy is defined as the love of wisdom and the rational attempt to understand fundamental problems regarding existence, knowledge, values, reason, mind, and language.
2. The main branches of philosophy are logic, metaphysics, epistemology, and value theory. Logic studies rules of reasoning. Metaphysics examines reality. Epistemology considers the nature and sources of knowledge. Value theory encompasses ethics, aesthetics, and social/political philosophy.
3. Ethics examines concepts of right and wrong through descriptive, normative, and metaethical approaches. Aesthetics concerns theories of art and beauty.