Plato 
The Plato Collection [EPUB ebook] 

"Philosophy is a series of footnotes to Plato." The original freethinker, Plato strove to teach his students to think for themselves.
The Plato Collection features:
Alcibiades I
Lysis
Laches
Charmides
Protagoras
Lesser Hippias
Gorgias
Meno
Euthyphro
Apology
Crito
Symposium
Phaedrus
The Republic
Phaedo
Cratylus
Ion
Euthydemus
Menexenus
Parmenides
Theaetetus
Sophist
Statesman
Philebus
Timaeus
Critias
and
Laws