Leadership means making tough decisions with compassion and clarity.

The history of philosophy is not, like the history of the sciences, to be considered as a mere chronological record of discoveries and errors. It is the history of the human spirit in its endeavor to understand itself and its relation to the universe.

What you get by achieving your goals is not as important as what you become by achieving your goals. At your funeral people will not recall what you did； they will only remember how you made them feel.

A real decision is measured by the fact that you’ve taken a new action. If there’s no action, you haven’t truly decided.

爱因斯坦当他说“上帝并不掷骰子”的时候是错误的。思考到黑洞的因素，上帝不仅仅仅玩骰子，他还经常把他们扔到我们看不到的地方来使我们迷惑。