The great betrayal (La trahison des clercs)

Physics and Politics, or, Thoughts on the application of the principles of "natural selection" and "inheritance" to political society

Nationality and Race from an Anthropologist's Point of View Being the Robert Boyle lecture delivered before the Oxford university junior scientific club on November 17, 1919

Humanism and America

Race and nationality

Philosophical Studies

Modern French Philosophy: a Study of the Development Since Comte

Nationalism

Littérature et Philosophie mêlées

Decadence Henry Sidgwick memorial lecture, 1908

Some Turns of Thought in Modern Philosophy: Five Essays

The Frontiers of Language and Nationality in Europe