Mathematics is not a spectator sport. You have to do it to understand it.
可持续性必须有利可图,否则就无法持续——这是我们在现代农业中必须解决的挑战。
我不是先知或石器时代的人,只是一个有超人潜力的凡人。
I don't have to be perfect, I just have to be me.