这是最好的时代，这是最坏的时代。
Program testing can be used to show the presence of bugs, but never to show their absence!
译文：做事情一定要切实认真，不要有浮躁之气，做人一定不能贪图没有实际用处的名声。赏析：做事要静心耐得住寂寞，方能成功，做人不要在乎虚名，虚名只会让我们迷失方向。
The computer is simply an instrument whose music is ideas.
The role of the artist is to ask questions, not answer them.
On pricing: "There are two kinds of companies， those that work to try to charge more and those that work to charge less. We will be the second."
The human soul is the result of the balance of Love and Strife within the body.