Science progresses by constantly questioning and refining our understanding.

"I think the mind is the most important thing in any sport. If you can control your mind, you can control the situation."

Freedom is not a gift, but a right that must be fought for.

Sometimes the hardest thing and the right thing are the same.

我们不必比别人更聪明，但必须比别人更有纪律性。

The best way to predict the future is to create it.

天下是人民为主，君主只是客人

指事物之间相互依存、相互制约的关系。