The only limits that exist are the ones you place on yourself.

Leadership is about making others better as a result of your presence and making sure that impact lasts in your absence.

The only real voyage of discovery consists not in seeking new landscapes, but in having new eyes.

宇宙可以被理解这一事实是一个奇迹。

The pursuit of knowledge is a journey without a final destination.

惩罚教会的是恐惧，而不是责任感。