
Source: The Natural History of the Soul (1745), Ch. VI Concerning the Sensitive Faculty of Matter
Ideology and Utopia (1929)
Source: The Natural History of the Soul (1745), Ch. VI Concerning the Sensitive Faculty of Matter
Knowing Yourself: The True in the False (1996)
Source: What is Political Philosophy (1959), p. 77
Journal entry (7 July 1980); published in Time Within Time: The Diaries 1970-1986 (1989)
Source: The Principles of Science: A Treatise on Logic and Scientific Method (1874) Vol. 1, p. 14
Source: The Knowledge-creating Company, 1995, p. 95
As quoted in Walden (1854) by Henry David Thoreau, Ch. 1
Attributed
Confucius, as quoted in Walden (1854) by Henry David Thoreau, Ch. 1
Misattributed