“In any case it is evident that there is a psychology as well as a sociology of handwriting. Tremendously complicated as the problem of diagnosis of individual traits from those tiny strokes of the pen appears, it is yet a legitimate problem of science; for the more progress psychology makes, the more evident it becomes that there is not a mode of expression which is not rooted to its finest detail in the complex psycho-physical organism. Meanwhile, it is fortunate that the task of identifying graphic signs should not be left wholly to the intuitions of the graphologist. Experimental work that seeks to induce variation in writing through a control of outer conditions must in time correlate certain definite variations in conditions with variation in such aspects of writing as size, speed, accuracy in alignment, inequality of control and the like.”

Often referred to as Anderson's Law.
Cited in:
Project Management: A Systems Approach to Planning, Scheduling, and Controlling by Harold Kerzner. Google Books http://books.google.com/books?id=4CqvpWwMLVEC&pg=PA246. Accessed September 5, 2009.
Checkland, P.B. (1985). Formulating problems in Systems Analysis. In: Miser, H. J. and Quade E. S. (eds.) (1985). Handbook of Systems Analysis: Overview of Uses, Procedures, Applications, and Practice. Chapter 5, pp. 151-170. North-Holland, New York.
Attributed

Source: 1930s, "Physicalism" (1931), p. 52

"Switzerland" in An Atheist Around The World
Context: Human problems are more psychological than materialistic. This is not only true of individual behaviour, but in mass action also. A suggestion from a leader sparks off a revolution. Material circumstances help mass action, but in themselves do not raise action. The conditions of untouchability and of poverty in India, especially at the time of famine in Bengal in 1945-46, when thousands of destitute died of sheer hunger in the streets of Calcutta City, are such as would provoke an immediate revolution. But the revolution does not come off in the Indian masses. The reason is clear. In India there are revolutionary circumstances, but there is no revolutionary consciousness among the people. If the revolutionary consciousness is present, people would revolt against any injustice on the slightest pretext. And consciousness is essentially psychological.

W. Ross Ashby, "Review of Analytical Biology, by G. Sommerhoff." In: Journal of Mental Science Vol 98 (1952), p. 88; As cited in Peter M. Asaro (2008)

Interview, 18 March 2002

Rogers v. Richmond, 365 U.S. 534, 540-41 (1961).
Judicial opinions
Context: Convictions following the admission into evidence of confessions which are involuntary, i. e., the product of coercion, either physical or psychological, cannot stand. This is so not because such confessions are unlikely to be true but because the methods used to extract them offend an underlying principle in the enforcement of our criminal law: that ours is an accusatorial and not an inquisitorial system — a system in which the State must establish guilt by evidence independently and freely secured and may not by coercion prove its charges against an accused out of his own mouth.

Source: Gestalt Psychology. 1930, p. 30

Chap. VI: The Dissection Of The Mass-Man Begins
The Revolt of the Masses (1929)
Context: Even to-day, in spite of some signs which are making a tiny breach in that sturdy faith, even to-day, there are few men who doubt that motorcars will in five years' time be more comfortable and cheaper than to-day. They believe in this as they believe that the sun will rise in the morning. The metaphor is an exact one. For, in fact, the common man, finding himself in a world so excellent, technically and socially, believes that it has been produced by nature, and never thinks of the personal efforts of highly-endowed individuals which the creation of this new world presupposed. Still less will he admit the notion that all these facilities still require the support of certain difficult human virtues, the least failure of which would cause the rapid disappearance of the whole magnificent edifice.… These traits together make up the well-known psychology of the spoilt child.

Collected Aphorisms