The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.

Transform everything around you with love.

The only interesting answers are those that destroy the questions.

"Books are the bridges that connect us to the future."

I don’t let mistakes discourage me, I let them educate me.

Randomized evaluations can help us understand what works and what doesn't in development.

我写关于我生活的歌，而我的生活相当普通。