The only limit to our realization of tomorrow will be our doubts of today.

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.

我没有遵循大学课程中传统的常规路径，而是为自己开辟了一条新路。

教育儿童，就不需要惩罚成年人。

爱是一种严重的精神疾病。