I believe in an immortal soul. Science has proved that nothing disintegrates into nothingness. Life and soul, therefore, cannot disintegrate into nothingness, and so are immortal.

Looking back, nothing seems so simple than a utopian vision realised.

In 1492 Columbus knew less about the far Atlantic than we do about the heavens, yet he chose not to sail with a flotilla of less than three ships. . . . So it is with interplanetary exploration: it must be done on the grand scale.

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

Conquering the universe one has to solve two problems: gravity and red tape. We could have mastered gravity.

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

It will free man from the remaining chains, the chains of gravity which still tie him to this planet.