Believe in yourself and all that you are. Know that there is something inside you that is greater than any obstacle.

领导力意味着为了更美好的明天而在今天做出艰难的选择。

"The past is a foreign country; they do things differently there."

I think it would be a disaster. The extraterrestrials would probably be far in advance of us. The history of advanced races meeting more primitive people on this planet is not very happy, and they were the same species. I think we should keep our heads low.

好奇心推动数学家前进，总是在寻找下一个要回答的问题。