Plato was a Greek philosopher who lived in the 4th century BCE and is widely considered to be one of the most influential figures in Western philosophy. He founded the Academy in Athens, the first institution of higher learning in the Western world. Sophocles was an Athenian playwright and poet who lived in the 5th century BCE and is best known for his tragedies. Socrates was a classical Greek philosopher who lived in the 5th century BCE and is credited as one of the founders of Western philosophy. CYNIC was a school of thought in ancient Greece that emphasized living a life of virtue and simplicity. ARISTOTLE was a Greek philosopher who lived in the 4th century BCE and is considered one of the most influential figures in Western philosophy. DIOGENES was a Greek philosopher who lived in the 4th century BCE and is best known for his CYNIC philosophy. Zeno was a Greek philosopher who lived in the 5th century BCE and is best known for his paradoxes. Thales was a Greek philosopher who lived in the 6th century BCE and is credited as one of the founders of Western philosophy. Epicurus was a Greek philosopher who lived in the 4th century BCE and is best known for his Epicurean philosophy.