Believe in yourself and all that you are. Know that there is something inside you that is greater than any obstacle.
相信自己和你所有的一切。知道你内心有比任何障碍都更伟大的东西。
Experience is simply the name we give our mistakes.
"The truth is rarely pure and never simple."
Mathematics is not a deductive science—that's a cliché. When you try to prove a theorem, you don't just list the hypotheses and then start to reason. What you do is trial and error, experimentation, guesswork.
对于任何事务，要改变它就要先接受它。谴责不会解放而只会压迫。