The rocket worked perfectly, except for landing on the wrong planet.

In order for us to use the very best judgment possible in spending the taxpayer's money intelligently, we just have to do a certain amount of this research and development work ourselves. We just have to keep our own hands dirty to command the professional respect of the contractor personnel engaged with actual design, shop and testing work.

It was very successful, but it fell on the wrong planet.

Nature does not know extinction; all it knows is transformation. ... Everything science has taught me-and continues to teach me-strengthens my belief in the continuity of our spiritual existence after death. Nothing disappears without a trace.

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

Man belongs wherever he wants to go - and he'll do plenty well when he gets there.

There are flying grandfathers. But I intend to be an orbiting grandfather.