The first step in liquidating a people is to erase its memory. Destroy its books, its culture, its history.

可持续农业不是一种趋势，而是我们星球唯一的前进道路。

I used to think the world was broken down by tribes. Then I thought it was broken down by rich and poor. Then I thought it was broken down by stupid and smart. But I know now that it is broken down by people who are alive and people who are dead.

"The pursuit of knowledge is a lifelong journey with no final destination."

We have to be prepared to take some risks, but they must be calculated risks.