Aristotle 
Aristotle: The Complete Works [EPUB ebook] 

Part 1: Logic (Organon)
Categories, translated by E. M. Edghill
On Interpretation, translated by E. M. Edghill
Prior Analytics (2 Books), translated by A. J. Jenkinson
Posterior Analytics (2 Books), translated by G. R. G. Mure
Topics (8 Books), translated by W. A. Pickard-Cambridge
Sophistical Refutations, translated by W. A. Pickard-Cambridge
Part 2: Universal Physics
Physics (8 Books), translated by R. P. Hardie and R. K. Gaye
On the Heavens (4 Books), translated by J. L. Stocks
On Gerneration and Corruption (2 Books), translated by H. H. Joachim
Meteorology (4 Books), translated by E. W. Webster
Part 3: Human Physics
On the Soul (3 Books), translated by J. A. Smith
On Sense and the Sensible, translated by J. I. Beare
On Memory and Reminiscence, translated by J. I. Beare
On Sleep and Sleeplessness, translated by J. I. Beare
On Dreams, translated by J. I. Beare
On Prophesying by Dreams, translated by J. I. Beare
On Longevity and Shortness of Life, translated by G. R. T. Ross
On Youth, Old Age, Life and Death, and Respiration, translated by G. R. T. Ross
Part 4: Animal Physics
The History of Animals (9 Books), translated by D’Arcy Wentworth Thompson
On the Parts of Animals (4 Books), translated by William Ogle
On the Motion of Animals, translated by A. S. L. Farquharson
On the Gait of Animals, translated by A. S. L. Farquharson
On the Generation of Animals (5 Books), translated by Arthur Platt
Part 5: Metaphysics
(15 Books), translated by W. D. Ross
Part 6: Ethics and Politics
Nicomachean Ethics (10 Books), translated by W. D. Ross
Politics (8 Books), translated by Benjamin Jowett
The Athenian Constitution, translated by Sir Frederic G. Kenyon
Part 7: Aesthetic Writings
Rhetoric (3 Books), translated by W. Rhys Roberts
Poetics, translated by S. H. Butcher