The only limit to our realization of tomorrow is our doubts of today.

We are not doing e-commerce; we are doing social e-commerce.

译文：年华随同时光飞快逝去，意志随同岁月而丧失。最终(像黄叶一样)枯老衰落，大多不接触世事，对社会没有任何贡献，只能悲哀困守在自己破败的房子里，那时再悔恨又怎么来得及!

善良是一种聋人能听见、盲人能看见的语言。

Leadership is about making others better as a result of your presence and making sure that impact lasts in your absence.

You have to be willing to put in the time, the effort, and the energy to be great.

他呢，狗嘴吐不出象牙。

朗兰兹纲领证明了数学思想的相互关联性。