The key to solving complex problems is often to find the right abstraction that simplifies the problem without losing its essential features.

暮春三月,穿上春天的衣服,约上五六人,带上六七个童子,在沂水边沐浴,在高坡上吹风,一路唱着歌而回

All changes, even the most longed for, have their melancholy; for what we leave behind us is a part of ourselves; we must die to one life before we can enter into another.

知识会使人变得更加聪明，但不会使人更加幸福。

I hope it will not be long before we have a machine that will be able to solve all mathematical problems.

I am not imposed upon by fine words; I can see what actions mean.