(C.460-C.370 B.C.)


Plato (427-347 B.C.)


Aristotle (384-322 B.C.)

Epicurus (341-270 B.C.) and Epicurean Philosophy


The problem of general concepts, which are corresponding to single (monadic) predicates (like "red", "raven"), was one of the most controversial questions in the medieval philosophy. (These general concepts are often called also as universals, properties, attributes or qualities).




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Pythagoras of Samos

Pythagoras (ca. 560-ca. 480 BC) -- from Eric Weisstein's World of Scientific Biography.
Plato and his dialogues

Plato and his dialogues online including a list of Plato's works.
Aristotle Biography

At age 17 Aristotle entered Plato's Academy in Athens, and remained there until Plato's death.