The human capacity for care is not finite; the more we give, the more we have to give.
The future of democracy depends on its ability to adapt to new challenges and to renew itself.
很大程度上运气是我有天才名誉的原因。在早上我不会走进办公室说“今天我聪明吗?,而是说,“今天我幸运吗?——数学家相对于其他人来说最大的优势是,数学家深刻理解“概率。