明明可以享受快乐却不去把握，为什么要自寻烦恼呢？

I'm pretty sure none of this would have happened if I hadn't been fired from Apple. It was awful tasting medicine, but I guess the patient needed it. Sometimes life hits you in the head with a brick. Don't lose faith. I'm convinced that the only thing that kept me going was that I loved what I did. You've got to find what you love. And that is as true for your work as it is for your lovers.

数学的美妙之处在于它常常引导我们发现关于物理世界的真理，而这些真理是我们无法通过其他方式发现的。