The heart is a fragile thing, easily broken but also capable of incredible resilience.
我们的选择,而非能力,更能展现我们真正的自我。
在数学中,你不理解事物。你只是习惯了它们。
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.