David George Ritchie

• Darwinism and Politics
• Natural Rights
• The Principles of State Interference
• The Principles of State Interference: Four Essays on the Political Philosophy of Mr. Herbert ..
• The Theory of State
• The Theory of the State
• Darwin and Hegel, with Other Philosophical Studies
• Man and the Cassock
• Natural rights (Library of philosophy)
• Natural Rights, a Criticism of Some Political and Ethical Conceptions
• Studies in Political and Social Ethics