"In the end, we are all alone, and that is the ultimate truth of existence."

"We are all apprentices in a craft where no one ever becomes a master."

I don't let setbacks stop me. They make me stronger.

The end of history will be a very sad time. The struggle for recognition, the willingness to risk one's life for a purely abstract goal, the worldwide ideological struggle that called forth daring, courage, imagination, and idealism, will be replaced by economic calculation, the endless solving of technical problems, environmental concerns, and the satisfaction of sophisticated consumer demands.

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。