Epistemology

Poetic Diction

Kant & Phenomenology

On the Nature of Thought

Luck, or Cunning, as the Main Means of Organic Modification

The Philosophy of Evolution

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