True leadership means making tough decisions today that will benefit future generations.

What matters in life is not what happens to you but what you remember and how you remember it.

"The past is never dead. It's not even past."

对付一个不自由的世界的方法就是变得如此绝对自由，以至于你的存在本身就是一种反叛。

The history of life is a history of connections.

The study of ancient DNA is like opening a window to the past.