The secret of improved plant breeding, apart from scientific knowledge, is love.
The health of our oceans reflects the health of our leadership.
The march of invention has clothed mankind with powers of which a century ago the boldest imagination could not have dreamt.
从错误中学习，但不要让它们定义你。
在探索宇宙的过程中，每一个被回答的问题都会引出更多的问题。