Philosophy: Ancient to Modern

The Complete Pythagoras. Iamblichus, Porphyry, Guthrie.
http://archive.org/details/CompletePythagoras

Pythagorean Life. Iamblichus.
http://archive.org/details/IamblichusPythagoreanLifetaylor

Plato's Republic. (Audio) Plato.
http://archive.org/details/PlatosRepublic

Parmenides. Plato.
http://archive.org/details/PlatosParmenides_512

The Laws of Plato. Plato.
http://archive.org/details/TheLawsOfPlato

Aristotle's Complete Works. Aristotle.
http://archive.org/details/CompleteWorks

Chinese Philosophy: An Exposition of the Main Characteristic Features of Chinese Thought. Dr Paul Carus.
http://archive.org/details/chinesephilosop00carugoog

A Course in Consciousness. Stanley Sobottka (Emeritus Professor of Physics, University of Virginia.http://www.faculty.virginia.edu/consciousness/Word%20Consciousness.pdf