"The danger is not only that politicians and private institutions with axes to grind will find tame or corruptible social scientists to support their positions. The greater danger which recent experiences both here and abroad, e.g., Lysenkoism in Russia, have revealed is that partisans primarily political in interest and intention either accidentally or deliberately infiltrate the ranks of science. In the case of the Lysenko episode, and comparable events in Nazi Germany, the disturbing realization to scientists was that the exile or death of those ejected from their academic positions followed what seemed initially to be severe technical criticism by fellow scientists, but was actually politically staged."

“Overt anxiety... that part of anxiety of which the individual is aware and ready to speak.”

“Subjectively the possession of a role factor is felt as a 'mental set' which modifies all ordinary responses. The very same stimulus is perceived in a different way when one is in the role and when one is out of it... Technically, we handle this change of perception the same way in a role as in a mood—both of which can intrude on the ordinary personality — by this special factor, L, which can be called a modulator factor. A modulator factor comes into action only when the usual ordinary 'focal stimulus' comes into the orbit of a set of role cues which we may call the 'ambient' or surrounding stimulus.”

“A taxonomy of abilities, like a taxonomy anywhere else in science, is apt to strike a certain type of impatient student as a gratuitous orgy of pedantry. Doubtless, compulsions to intellectual tidiness express themselves prematurely at times, and excessively at others, but a good descriptive taxonomy, as Darwin found in developing his theory, and as Newton found in the work of Kepler, is the mother of laws and theories.”

“... that which tells what a man will do when placed in a given situation.”

“Dominance... is shown in assertive, independent, confident and stubborn behaviour.”

“Of course, science lives by confusing theories, but what were accepted as 'theories' even by the many professional psychologists and psychiatrists were very poor limitations of what physical scientists call a theory.”