The Allegory of the Cave
Plato's Allegory of the Cave is what many believe to be the foundation of Western Philosophy. It addresses what is visible and invisible, seen and observed versus intuited and imagined, and what is public versus private and just versus unjust. It also concerns the meaning and importance of education, the state of the soul, the conflict between truth and beauty, animal urges versus higher aspirations, knowledge versus ignorance, and on and on...