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The Hellenistic philosophers / Long, A. A.

The philosopher's handbook Rosen, Stanley

Modal logic for philosophers / Garson, James W., 1943-

The pre-Platonic philosophers / Nietzsche, Friedrich Wilhelm, 1844-1900.

Philosophers and religious truth. Smart, Ninian, 1927-2001.

Primates and philosophers : how morality evolved / Waal, Frans de.

The sceptics : the arguments of the philosophers / Hankinson, R. J.

Philosophers without gods : meditations on atheism and the secular life / Antony, Louise M.

Dumb beasts and dead philosophers : humanity and the humane in ancient philosophy and literature /

Why is there something rather than nothing? : questions from great philosophers / Kołakowski

The best of all possible worlds : a story of philosophers, God, and evil / Nadler, Steven M., 1958-