Metaphysics

M. Cousin's Course of Philosophy

The Little Blue Book aka El Librito Azul

What Is Reality

The Nature of the Physical World

The Essays of Arthur Schopenhauer; Studies in Pessimism

Essay on the Creative Imagination

The Making of a Man

A New Era of Thought

Frameshifting

Spiritual Anarchist

A Pluralistic Universe

Phaedo

Facts of Consciousness