The only real prison is fear, and the only real freedom is freedom from fear.

忠诚就是一切。

In the quest for understanding the cosmos, every question answered leads to a dozen more.

The purpose of life is the pursuit of truth and virtue.

The past is a cupboard full of light and all you have to do is find the key that opens the door.

Change is hardest in the beginning, messiest in the middle, and best at the end.

Gunpowder is my brush, the sky is my canvas.#火药是我的画笔，天空是我的画布。

The only way to do it is to do it.

Your job as a leader is to make those around you better, not to make yourself look better.

I was so much older then, I’m younger than that now.