“To think it, wish it, even want it —
but do it! No, that I cannot understand.”

Biographical memoir: "John von Neumann (1903 - 1957)" in Year book of the American Philosophical Society (1958); later in Symmetries and Reflections : Scientific Essays of Eugene P. Wigner (1967), p. 261
Context: 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.

Source: The Metamorphosis (1915)

1920s, Truth is a Pathless Land (1929)
Context: Your prejudices, your fears, your authorities, your churches new and old – all these, I maintain, are a barrier to understanding. I cannot make myself clearer than this. I do not want you to agree with me, I do not want you to follow me, I want you to understand what I am saying. “This understanding is necessary because your belief has not transformed you but only complicated you, and because you are not willing to face things as they are. You want to have your own gods – new gods instead of the old, new religions instead of the old, new forms instead of the old – all equally valueless, all barriers, all limitations, all crutches. Instead of old spiritual distinctions you have new spiritual distinctions, instead of old worships you have new worships. You are all depending for your spirituality on someone else, for your happiness on someone else, for your enlightenment on someone else; and although you have been preparing for me for eighteen years, when I say all these things are unnecessary, when I say that you must put them all away and look within yourselves for the enlightenment, for the glory, for the purification, and for the incorruptibility of the self, not one of you is willing to do it. There may be a few, but very, very few. So why have an organization?

Source: A Princess of Mars

In a letter to her aunt Mary Hill, from Worpswede, June 1899; as quoted in Paula Modersohn-Becker – The Letters and Journals, ed: Günther Busch & Lotten von Reinken; (transl, A. Wensinger & C. Hoey; Taplinger); Publishing Company, New York, 1983, p. 135
1899

1950's, On Being a Graphic Artist', 1953
Context: I do indeed believe that there is a certain contrast between, say, people in scientific professions and people working in the arts. Often there is even mutual suspicion and irritation, and in some cases one group greatly undervalues the other. Fortunately there is no one who actually has only feeling or only thinking properties. They intermingle like the colors of the rainbow and cannot be sharply divided. Perhaps there is even a transitional group, like the green between the yellow and the blue of the rainbow. This transitional group does not have a particular preference for thinking or feeling, but believes that one cannot do without either the one or the other. At any rate, it is unprejudiced enough to wish for a better understanding between the two parties... It is clear that feeling and understanding are not necessarily opposites but that they complement each other.

Quoted in Henry More: The Rational Theology of a Cambridge Plattonist (1962) by Rabbi Aharon Lichtenstein, page 100.

Source: Aesthetics and Hermeneutics (1964), p. 101 http://books.google.com/books?id=7RP-TggufEEC&pg=PA101
Context: We cannot understand without wanting to understand, that is, without wanting to let something be said. It would be an inadmissible abstraction to contend that we must first have achieved a contemporaneousness with the author or the original reader by means of a reconstruction of his historical horizon before we could begin to grasp the meaning of what is said. A kind of anticipation of meaning guides the effort to understand from the very beginning.