The most important word in science is not 'Eureka!' but 'That's funny...'

The comfort of the rich depends upon an abundant supply of the poor.

从理智的异议中寻找乐趣，因为只有尊重理智，才能比消极的服从带来更深刻的一致。

The true spirit of delight, the exaltation, the sense of being more than Man, which is the touchstone of the highest excellence, is to be found in mathematics as surely as in poetry.