The most important thing in mathematics is to understand the concepts, not just to memorize formulas.
Be thankful for what you have; you’ll end up having more. If you concentrate on what you don’t have, you will never, ever have enough.
适应力是任何行业长久发展的关键。
我不是一个会回头看并想着“我希望我当时做得不同”的人。
The real problem is not whether machines think but whether men do.
A real decision is measured by the fact that you've taken a new action. If there's no action, you haven't truly decided.