如果我们想为子孙后代提供粮食，可持续农业是唯一的前进方向。

It is no use saying, 'We are doing our best.' You have got to succeed in doing what is necessary.

There is nothing either good or bad, but thinking makes it so.

I don't believe in universal solutions; I believe in singular responses.

暴力中没有长存的希望，只能从绝望中得到暂时的解脱。