The beauty of mathematics only shows itself to more patient followers.

Cheerfulness is the best promoter of health.

It's not the absence of fear. It's overcoming it. Sometimes you've got to blast through and have faith.

乐观是一种创造更美好未来的策略。因为除非你相信未来会更好，否则你不太可能站出来为创造这样的未来承担责任。