The key to breakthrough is not just hard work, but also the courage to challenge existing paradigms.

全球饥饿问题不能仅靠慈善解决，它需要系统性变革。

The photograph is literally an emanation of the referent. From a real body, which was there, proceed radiations which ultimately touch me, who am here.

对于劳动者来说，最大的幸福是有充足的物质享受。

The best way to document a program is to document it.

I keep thinking about this river somewhere, with the water moving really fast. And these two people in the water, trying to hold onto each other, holding on as hard as they can, but in the end it’s just too much. The current’s too strong. They’ve got to let go, drift apart.

The ultimate test of any economic theory is whether it improves real-world decisions.

Sometimes we get sad about things and we don’t like to tell other people that we are sad about them. We like to keep it a secret. Or sometimes, we are sad but we really don’t know why we are sad, so we say we aren’t sad but we really are.