I think of a hero as someone who understands the degree of responsibility that comes with his freedom.

与孩子们在一起，灵魂得到治愈。

数学语言是通用的，超越了文化和语言的障碍。

创新不是对每件事都说“是”，而是对除最关键功能外的一切说“不”。

The elements of consciousness are to be discovered by careful experimentation.

Pain is temporary. It may last a minute, or an hour, or a day, or a year, but eventually it will subside and something else will take its place. If I quit, however, it lasts forever.