成功来自于为他人创造价值并对世界产生积极影响。
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.
Remember, if you ever need a helping hand, you'll find them at the end of each of your arms.