The only limit is the one you set yourself.

我不想安全，我想真实。

任何白痴都能面对危机；磨损人的是日复一日的生活。

It seems to me that if you or I must choose between two courses of thought or action, we should remember our dying and try so to live that our death brings no pleasure to the world.

Innovation distinguishes between a leader and a follower.

唯一有价值的东西是你无法买到的东西。