楚狂接舆歌而过孔子，曰：“凤兮！凤兮！何德之衰？往者不可谏，来者犹可追。己而！已而！今之从政者殆而！”
楚国的狂人接舆唱歌路过孔子车旁，说：“凤啊！凤啊！你怎么这样倒霉？过去的不可挽回，未来的还可以赶上。算了！算了！现在的执政者很危险！”
"The world is a book, and those who do not travel read only one page."
The more you try to forget, the more you remember.
Faith has to do with things that are not seen and hope with things that are not at hand.
Leadership in sustainability means making decisions that will be praised in 20 years, not just tomorrow.
现在数学家面临的最大问题可能是黎曼假设。
L'absence est à l'amour ce qu'est au feu le vent; il éteint le petit, il allume le grand.