You must be the change you wish to see in the world.
The best way to predict the future is to invent it.
The goal of mathematics is to make the simple complicated, and the complicated simple.
可持续性不是一种趋势;而是我们对地球和未来农民的责任。
模糊逻辑并非模糊思维,而是一种关于不精确性的精确逻辑。