World Philosophy Day ... your philosophers and see what quotes are you familiar with. ‘The unexamined life is not worth living’. ‘There is only one good, knowledge, and one evil, ignorance’.

Plato was an Athenian philosopher who was a student of Socrates and the teacher of Aristotle. With a plethora of interests and ideas from mathematics to political theory, his effect on philosophy ...

As a philosophy teacher to grade-school ... happiness, existence, knowledge, death. Over the years, some quotes have really stuck with her. Here a select group she shared with Business Insider ...

These are three of the most quoted statements in the history of philosophy but ... "the cogito is a first order of knowledge," which means all other knowledge is premised upon the fact that ...