伦理学的任务不仅是理解世界，而且是改变世界。

In physics, we often find that the most beautiful solutions emerge from the messiest problems.

世界需要务实的解决方案，而不仅仅是理想主义的愿景。

我不相信风格，我相信思考的过程。

不要担心你在数学上遇到的困难；我敢保证我遇到的困难比你还大得多。

The passions that incline men to peace are fear of death, desire of such things as are necessary to commodious living, and a hope by their industry to obtain them.

"Life is tough, and things don’t always work out well, but we should be brave and take risks. We shouldn’t hesitate to take the next step."