The human failing I would most like to correct is aggression.

I have so much that I want to do. I hate wasting time.

Never put off the work till tomorrow what you can put off today.

Life on Earth is at the ever-increasing risk of being wiped out by a disaster, such as sudden global warming, nuclear war, a genetically engineered virus or other dangers. I think the human race has no future if it doesn't go into space. I therefore want to encourage public interest in space.

I'm not afraid of death, but I'm in no hurry to die. I have so much I want to do first.

It often happens that I have an idea, but then I try to fill in the intermediate steps and find they don't work, so I have to give it up.

Disability need not be an obstacle to success.