And that's a lot of the reason why we care so much about our careers and indeed start caring so much about material goods. You know, we're often told that we live in very materialistic times, that we're all greedy people. I don't think we are particularly materialistic. I think we live in a society which has simply pegged certain emotional rewards to the acquisition of material goods. It's not the material goods we want;

可持续性是畜牧养殖的唯一前进道路——没有其他选择。

创新是解决粮食生产挑战的关键。

一个人胜券在握时，总是应该公平行事。

你必须准备好受苦并享受痛苦。