I'm not a perfectionist, but I like to feel that things are done well.

有时候生活中最难的事情是知道该跨过哪座桥，该烧掉哪座桥。

The world is all the richer for having a devil in it, so long as we keep our foot upon his neck.

In the dance of particles and forces, we find the rhythm of the cosmos.

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.

Quality is never an accident; it's always the result of intelligent effort.