数学是理性的音乐。
The tigers of wrath are wiser than the horses of instruction.
Time does not move in a straight line; it folds back on itself.
一个人生前被所有人熟知,但对自己仍然不了解,这是一个悲哀的命运。
"When you are writing, you are trying to find out something which you don't know."
Excellence is not an act, but a habit.