A picture must be grasped at once, as a whole, like a piece of music.

过去总是紧张的，未来是完美的。

One must not lose desires. They are mighty stimulants to creativeness, to love, and to long life.

Consciousness is a stream, not a collection of separate elements.

And I hope you will come back here to Harvard 30 years from now and reflect on what you have done with your talent and your energy. I hope you will judge yourselves not on your professional accomplishments alone, but also on how well you have addressed the world's deepest inequities…on how well you treated people a world away who have nothing in common with you but their humanity.