The greatest thing you'll ever learn is just to love and be loved in return.
In a crisis, the priority is to stop the bleeding.
在数学中,你并不理解事物。你只是习惯了它们。
生下来就知道的人是上等,经过学习才知道的人是次一等,遇到困惑才学习的人是又次一等,有了困惑而不学习的,这是最下等的人。
The best way to predict the future is to invent it.