数学的进步是通过概括实现的。

The future belongs to those who believe in the beauty of their dreams.

Buying tools: Start by buying the absolute cheapest tools you can find. Upgrade the ones you use a lot. If you wind up using some tool for a job， buy the very best you can afford.

If you’re not willing to take risks, you’ll never create something truly remarkable.

大国总是在寻找机会以牺牲对手为代价来获得权力，并主导体系。

真正的进步不仅仅以利润来衡量，还以我们对社会的积极影响来衡量。