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It is exceptional that one should be able to acquire the understanding of a process without having previously acquired a deep familiarity with running it, with using it, before one has assimilated it in an instinctive and empirical way... Thus any discussion of the nature of intellectual effort in any field is difficult, unless it presupposes an easy, routine familiarity with that field. In mathematics this limitation becomes very severe.
--
As quoted in "The Mathematician" in The World of Mathematics (1956), by James Roy Newman

 

John von Neumann

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It is true of opinions as of other compositions that those who are seeped in them, whose ears are sensitive to literary nuances, whose antennae record subtle silences, can gather from their contents meaning beyond the words. All this presupposes, of course, a grasp of the nature of the Supreme Court's functions — the scope and limits of its constitutional authority — and often, as well, familiarity with the record and briefs of a particular case whose opinion record and briefs of a particular case whose opinion is under scrutiny.

 

Felix Frankfurter

 

A deep sense of humor and an unusual ability for telling stories and jokes endeared Johnny even to casual acquaintances. He could be blunt when necessary, but was never pompous. A mind of von Neumann's inexorable logic had to understand and accept much that most of us do not want to accept and do not even wish to understand. This fact colored many of von Neumann's moral judgments. "It is just as foolish to complain that people are selfish and treacherous as it is to complain that the magnetic field does not increase unless the electric field has a curl. Both are laws of nature." Only scientific intellectual dishonesty and misappropriation of scientific results could rouse his indignation and ire — but these did — and did almost equally whether he himself, or someone else, was wronged.

 

E. P. Wigner

 

On that same plantation, there was the field Negro. The field Negroes — those were the masses. There were always more Negroes in the field than there were Negroes in the house. The Negro in the field caught hell. He ate leftovers. In the house they ate high up on the hog. The Negro in the field didn't get anything but what was left of the insides of the hog.

 

Malcolm (Malcolm Little) X

 

On that same plantation, there was the field Negro. The field Negroes — those were the masses. There were always more Negroes in the field than there were Negroes in the house. The Negro in the field caught hell. He ate leftovers. In the house they ate high up on the hog. The Negro in the field didn't get anything but what was left of the insides of the hog.

 

Malcolm X

 

Our intellectual development in the field of science has outstripped our human development in the field of character.

 

L. P. Jacks