谁的快乐最廉价，谁就是最富有的人。
A man is rich in proportion to the number of things which he can afford to let alone. That man is the richest whose pleasures are the cheapest.
You have to be passionate about what you do; otherwise, you will never excel.
The question of whether computers can think is like the question of whether submarines can swim.
You get what you give. What you put into things is what you get out of them.