唯一能让你富有的是你的思想。
The important thing in science is not so much to obtain new facts as to discover new ways of thinking about them.
Safety must remain our top priority in every operation, every day.
I've learned that you shouldn't go through life with a catcher's mitt on both hands; you need to be able to throw something back.
没有大胆的猜测,就没有伟大的发现。