The worst prison is not the one with walls and bars, but the one in our minds.
Mathematics is not a spectator sport.
信任是好的,控制更好。
La memoria es el único paraíso del cual no podemos ser expulsados.
"The credibility of your results depends on the plausibility of your identifying assumptions."
传记的挑战不在于发现事实 - 而在于发现事实背后的意义。
他不爱我,他爱的是关于我的想法。