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

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

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

Man is not made for space. But with the help of biologists and medical doctors, he can be prepared and accommodated.

The logistic requirements for a large, elaborate mission to Mars are no greater that those for a minor military operation extending over a limited theatre of war.

Science does not have a moral dimension. It is like a knife. If you give it to a surgeon or a murderer, each will use it differently.

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.