量子力学不仅是关于原子的理论，更是关于整个自然的理论。
一幅画必须是它自身的东西，而不是其他事物的再现。
"A story has no beginning or end: arbitrarily one chooses that moment of experience from which to look back or from which to look ahead."
One foul sentence does more hurt than many foul examples. For these do but corrupt the stream；the other corrupt the fountain.
"In mathematics, we often seek elegance and simplicity, but in computer science, we must also consider practicality and efficiency."