To truly understand the universe, we must first understand the limits of our understanding.

对中国国民党同志共勉，1920年1月1日

在愿望和现实之间，世界静静等待。

You can't let your failures define you. You have to let your failures teach you.

I don't believe in poverty. I believe in creating opportunities.

提高就是要改变,而要达到完美就要不断改变。