Design is not just what it looks like and feels like. Design is how it works.
A proof is a device for convincing someone else that a mathematical statement is true.
法律不是人类生活的最高表现,但它是所有更高表现的不可或缺的条件。
I like being a woman, even in a man's world. After all, men can't wear dresses, but we can wear the pants.
Life is too short to wake up in the morning with regrets.