Money is overrated. Truly new things rarely need an abundance of money. If that was so， billionaires would have a monopoly on inventing new things， and they don’t. Instead almost all breakthroughs are made by those who lack money， because they are forced to rely on their passion， persistence and ingenuity to figure out new ways. Being poor is an advantage in innovation.

A good mathematician is one who can see analogies between theorems; a great mathematician is one who can see analogies between analogies.

你无法控制生活中的一切，但你可以控制自己的反应。

你做得越多，学到的就越多。你学到的越多，你能做的就越多。