能爱邦内之民者，能服境外之不善。
能关爱自己国内的老百姓，才能让国外不友好的势力臣服。
The best way to learn is by doing.
Every thought is a step in the dance of adaptation.
Success in any scientific career requires an unusual equipment of capacity, industry, and energy.
如果可能的话，和平；无论如何，真理。
The most important thing in science is not so much to obtain new facts as to discover new ways of thinking about them.