过去永远不会消逝,它甚至从未过去。
The most beautiful words in the English language are 'I told you so.'
The best way to keep a secret is to never have one.
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.