没有人民的普遍知识，自由就无法得到维护。
Liberty cannot be preserved without a general knowledge among the people.
恐惧只是我们对自己讲的故事。
数学的美在于它如此简单却又如此强大。
I just treated people,when I was in a position of authority ,with compassion,understanding and love,that's basically what I've done in life.
这个世界是个美好的地方，值得为之奋斗。
做出伟大工作的唯一方法就是热爱你所做的事。