You cannot hope to build a better world without improving the individuals. To that end, each of us must work for our own improvement and, at the same time, share a general responsibility for all humanity, our particular duty being to aid those to whom we think we can be most useful.

解决一个数学问题就是揭开宇宙拼图的一块。

适应变化而非抗拒变化，才能建立韧性。

We must be free not because we claim freedom, but because we practice it.