The great secret that all old people share is that you really haven't changed in seventy or eighty years. Your body changes, but you don't change at all. And that, of course, causes great confusion.

自守形式的研究证明了对称性在数学中的力量。

生活就是当你忙于制定其他计划时发生的事情。

伟大的生命就像伟大的小说 - 它们有情节转折、角色发展和纯粹的诗意时刻。