Plato

429–347 bc
Biographical Sketch: 

Plato was a philosopher from Ancient Greece who founded the Academy of Athens and used it as a platform to convey his ideas about ethics, politics, and philosophy. Plato focused on Philosophical topics such as Epistemology and Metaphysics. He explored political science and looked for the best form of government, and he expanded what we know regarding the dichotomy of knowledge and opinion as well the idea of "nature vs. nurture". 

Authored: 

Apology
Charmides
Cratylus
Critias
Crito
Euthyphro
Gorgias
Ion
Laches
Laws
Lysis
Meno
Parmenides
Phaedo
Phaedrus
Philebus
Protegoras
The Republic
The Seventh Letter
Sophist
Stateman
Symposium
Theaeretus
Timaeus

Quote: 

All men are by nature equal, made all of the same earth by one Workman; and however we deceive ourselves, as dear unto God is the poor peasant as the mighty prince.