没有改变就不可能进步，而无法改变思想的人也无法改变任何事。

言语是行为的影子。

The study of cognition requires both empirical and theoretical approaches.

The hardest thing to do is to accept that you are not the hero of your own story.

To feed the world, we must first respect the resources we have.

I'm not a leader, I'm a follower.