It doesn’t matter how far you might rise. At some point you are bound to stumble because if you’re constantly doing what we do， raising the bar.

Psychology as the behaviorist views it is a purely objective experimental branch of natural science.

The key to success is to keep trying, even when things don't work out the first time.

In mathematics, the art of proposing a question must be held of higher value than solving it.

你想用卖糖水来度过余生，还是想要一个机会来改变世界？

This is an interesting planet. It deserves all the attention you can give it.

I don't let anyone else write my story.