"Theologians talk about a prevenient grace that precedes grace itself and allows us to accept it. I think there must also be a prevenient courage that allows us to be brave - that is, to acknowledge that there is more beauty than our eyes can bear, that precious things have been put into our hands and to do nothing to honor them is to do great harm."

The key to performance is elegance, not battalions of special cases.

物理学的魅力在于它能够用简单的原理解释复杂的事物。