I have learned to use the word impossible with the greatest caution.

Crash programs fail because they are based on the theory that, with nine women pregnant, you can get a baby a month.

We can lick gravity, but sometimes the paperwork is overwhelming.

There is just one thing I can promise you about the outer-space program: your dollar will go further.

We can lick gravity, but sometimes the paperwork is overwhelming.

Man is the best computer we can put aboard a spacecraft… and the only one that can be mass produced with unskilled labor.