——《致郑藻如书》（1890年）

The Langlands program is a testament to the beauty of mathematical abstraction.

A good engineer is someone who can turn frustration into inspiration.

I can never be safe; I always try and go against the grain. As soon as I accomplish one thing, I just set a higher goal. That’s how I’ve gotten to where I am.

People of the same trade seldom meet together， even for merriment and diversion， but the conversation ends in a conspiracy against the public， or in some contrivance to raise prices.

Change your life today. Don't gamble on the future, act now, without delay.