Education is not just about building schools, but about ensuring children actually learn.

The arithmetic of modular forms is a key to understanding the deeper mysteries of number theory.

【原文】季文子三思而后行。子闻之曰：“再，斯可矣。”【译文】季文子遇事总要思考三次，然后才行动。孔子听说后，说：“思考两次就可以了。”

The improvement of understanding is for two ends: first, our own increase of knowledge; secondly, to enable us to deliver that knowledge to others.

Education alone is not enough to lift people out of poverty; we need to address the broader system.

我不是那种会让我的动力下降的人。

Go for a business that any idiot can run – because sooner or later, any idiot probably is going to run it.

你必须对自己的能力有信心，然后足够坚强地坚持到底。