Success is not final, failure is not fatal: It is the courage to continue that counts.
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.
The wound of displacement never fully heals; it only learns to speak in different tongues.
如果说我看得比别人更远些,那是因为我站在巨人的肩膀上。
自动机和形式语言的研究对于理解计算的极限是基础性的。