
Source: The Limits of Evolution, and Other Essays, Illustrating the Metaphysical Theory of Personal Ideaalism (1905), Preface to First Edition, p.xiv
Source: The Limits of Evolution, and Other Essays, Illustrating the Metaphysical Theory of Personal Ideaalism (1905), Appendix B: The System in its Ethical Necessity and its Practical Bearings, p.393
Source: The Limits of Evolution, and Other Essays, Illustrating the Metaphysical Theory of Personal Ideaalism (1905), Preface to First Edition, p.xiv
Source: In Defence Of Politics (Second Edition) – 1981, Chapter 5, A Defence Of Politics Against Technology, p. 102.
Oxford Book of English Verse, Introduction
Hess to Herzen, March 1850, Briefwechsel p. 253
Hess' Diary
Source: Adventures In Consciousness: An Introduction to Aspect Psychology (1975), pp.118-119
13 February 1945.
Disputed, The Testament of Adolf Hitler (1945)
Pseudo-Aristotle, De Mundo, 399a https://archive.org/stream/worksofaristotle03arisuoft#page/n181/mode/2up/search/heavenly
Disputed