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.

角色是追逐我的幽灵，直到我在纸上赋予它们声音。

我们每天所做的选择——我们买什么、吃什么、如何生活——都会产生影响。