农业中最大的风险是世界在变化，而我们却停滞不前。

If you start out by promising what you don't even have yet, you'll lose your desire to work toward getting it.

No president who performs his duties faithfully and conscientiously can have any leisure.

I'm the reason your hate won't die.

建筑必须回应其背景、气候和文化。

The use of a program to prove the 4-color theorem will not change mathematics - it merely demonstrates that the theorem, a challenge for a century, is probably not important to mathematics.