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.
John von NeumannRelated topics
able deep easy effort exceptional field having intellectual limitation mathematics nature running should thus understanding using wayRelated quotes
Thus we seem to be on the verge of an expansion of welfare economics into something like a social science of ethics and politics: what was intended to be a mere porch to ethics is either the whole house or nothing at all. In so laying down its life welfare economics may be able to contribute some of its insights and analytical methods to a much broader evaluative analysis of the whole social process.
Kenneth Boulding
Many Westerners forget that when the Prophet spoke of four wives as the maximum allowable number, he had in mind a reduction to four as compared to the number then often prevailing; moreover, Mohammed specified that a man should acquire more than one wife only if he could treat them all with equal justice - obviously a difficult feat for even the most diligent man to achieve. In effect, then, the Prophet curtailed the number of wives.
Muhammad Reza Pahlavi
Men may be very learned, and yet very miserable; it is easy to be a deep geometrician, or a sublime astronomer, but very difficult to be a good man. I esteem, therefore, the traveller who instructs the heart, but despise him who only indulges the imagination. A man who leaves home to mend himself and others, is a philosopher; but he who goes from country to country, guided by the blind impulse of curiosity, is only a vagabond.
Oliver Goldsmith
Three principles - the conformability of nature to herself, the applicability of the criterion of simplicity, and the "unreasonable effectiveness" of certain parts of mathematics in describing physical reality - are thus consequences of the underlying law of the elementary particles and their interactions. Those three principles need not be assumed as separate metaphysical postulates. Instead, they are emergent properties of the fundamental laws of physics.
Murray Gell-Mann
My definition of art has always been the same. It is about freedom of expression, a new way of communication. It is never about exhibiting in museums or about hanging it on the wall. Art should live in the heart of the people. Ordinary people should have the same ability to understand art as anybody else. I don't think art is elite or mysterious. I don't think anybody can separate art from politics. The intention to separate art from politics is itself a very political intention.
Ai Weiwei