Epistemology

The Study of Philosophy: An Outline

Mind Games

The Advancement of Learning

Rules for the Direction of the Mind

Absurdities of Immaterialism Or, A Reply to T. W. P. Taylder's Pamphlet, Entitled, “The Materialism of the Mormons or Latter-Day Saints, Examined and Exposed.”

Phaedo

Life and Matter: A Criticism of Professor Haeckel's “Riddle of the Universe”

Modern Rationalism

On the Nature of Thought

Lectures on Popular and Scientific Subjects

Aphorisms and Reflections from the works of T. H. Huxley

The Philosophy of the Conditioned

God or Nature, Whatever

Hegel's Dialectic

Foucault's Power

Being Really Confused

Sartre's No Exit

Leibniz’s Monads

Noble Savage, Deadbeat Dad

Creation or Evolution? A Philosophical Inquiry