Triumphs of Invention and Discovery in Art and Science

The Foundations of Science_ Science and Hypothesis, The Value of Science, Science and Method

Fundamental Peace Ideas including The Westphalian Peace Treaty (1648) and The League Of Nations (1919) in connection with International Psychology and Revolutions

The peace negotiations between the governments of the South African Republic and the Orange Free State, and the representatives of the British government, which terminated in the peace concluded at Vereeniging on the 31st May, 1902