Utilitarianism
Geoffrey Scarre
Leonhard Euler: Mathematical Genius in the Enlightenment
Ronald Calinger
Anarchy and Apocalypse: Essays on Faith, Violence, and Theodicy
Ronald E. Osborn
Three Philosophical Poets
George Santayana
Concise Encyclopedia of Philosophy of Language and Linguistics
Alex Barber & Keith Brown & Robert J. Stainton
Storming Heaven: LSD and the American Dream
Jay Stevens