The trouble with the world is that the stupid are cocksure and the intelligent are full of doubt.

I would like to fly in space.Absolutely.That would be cool.I used to just do personally risky things， but now I’ve got kids and responsibilities， so I can’t be my own test pilot.That wouldn’t be a good idea.But I definitely want to fly as soon as it’s a sensible thing to do.

创造力不是关于原创性，而是关于诚实。

当每一分钱都要精打细算，犯错的空间就消失了。