Fear can hold you prisoner. Hope can set you free.

The only limits in life are the ones you set for yourself.

你的梦想实现不了是因为我。

I remember my friend Johnny von Neumann used to say, 'with four parameters I can fit an elephant, and with five I can make him wiggle his trunk.'

写作是我向自己解释自己生活的唯一方式。

聪明人的问题是，他们在愚蠢的人看来就像疯子。

The future of drones is not to replace humans, but to empower them.

如果你不犯错，说明你解决的问题还不够难。