The document discusses key ideas and thinkers of the Enlightenment period from the 17th to 18th centuries. This period is commonly referred to as the Age of Reason. Major philosophers who contributed influential ideas included Thomas Hobbes, John Locke, Baron de Montesquieu, Jean-Jacques Rousseau, and Voltaire. They advocated for forms of government like democracy and separation of powers, and for concepts like natural rights, freedom of speech and religion, and the social contract between rulers and citizens. The Enlightenment fueled democratic revolutions, applied reason to government and law, stimulated religious tolerance, and taught that rights come from natural law, not governments.