关于理论最重要的事情是它应该是可测试的。
I think rationality is a kind of idealization.
Sustainable agriculture requires a balance between technology and ecological preservation.
Fearless is not the absence of fear. It's not being completely unafraid. Fearless is having fears. Fearless is having doubts. Lots of them. Fearless is living in spite of those things, every day.