宇宙不仅比我们想象的更奇怪，而且比我们能够想象的更奇怪。
The universe is not only queerer than we suppose, but queerer than we can suppose.
Try to learn something about everything and everything about something.
The pain of loss is the price we pay for the joy of love.
真正的领导力意味着帮助他人变得比他们自己认为的更好。
〈与日人某君的谈话〉，1924年2月
一个社会的竞争优势不是来自学校把乘法和元素周期表教得多么好，而是来自他们激发学生想象力和创造力的程度。