The existence of the natural world is the same kind of fact as the existence of any proposition.

"I don't write to be loved, I write to be understood."

酸和碱是互补的；没有另一个，一个就无法存在。

The best way to get a project done faster is to start sooner.

我不是环境的产物，我是自己选择的产物。

Don't watch the clock; do what it does. Keep going.