数学是宇宙的语言，通过它，我们可以解开存在的秘密。

If you're not stubborn， you'll give up on experiments too soon. And if you're not flexible， you'll pound your head against the wall and you won't see a different solution to a problem you're trying to solve.

我相信理解市场心理和投资者心理是至关重要的。