Epistemology

Flowers of Freethought (Second Series)

Phaedrus

The Advancement of Learning

Civilization

Life and Conduct

Thinking as a Science

Pragmatism: A New Name for Some Old Ways of Thinking

M. Cousin's Course of Philosophy

Meditations on First Philosophy

Feeding the Mind

The Basis of Morality

The Study of Philosophy: An Outline

The Eclipse of Faith; Or, A Visit to a Religious Sceptic

Mind Games

Know the Truth: A Critique on the Hamiltonian Theory of Limitation

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.”

An Enquiry Concerning Human Understanding

Avenarius and the Standpoint of Pure Experience

On Sense and the Sensible

The Philosophy of Mystery