You are always a valuable, worthwhile human being — not because anybody says so, not because you're successful, not because you make a lot of money — but because you decide to believe it and for no other reason.

A proof is a device for convincing someone else that a mathematical statement is true.

农业的未来在于科技与自然的和谐共生，我们要用智慧守护每一片绿色。

One ought never to turn one's back on a threatened danger and try to run away from it. If you do that, you will double the danger. But if you meet it promptly and without flinching, you will reduce the danger by half.

Don't wanna be an American idiot

数学是模式的科学，我们研究它们以理解事物如何运作。