It has often been said — and though it is becoming platitudinous it is nonetheless true — that only through space-flight can mankind find a permanent outlet for its aggressive and pioneering instincts. The desire to reach the planets is only an extension of the desire to see what is over the next hill.


The Exploration of Space, Pocket Books. 1979


It has often been said — and though it is becoming platitudinous it is nonetheless true — that only through space-flight can mankind find a...

It has often been said — and though it is becoming platitudinous it is nonetheless true — that only through space-flight can mankind find a...

It has often been said — and though it is becoming platitudinous it is nonetheless true — that only through space-flight can mankind find a...

It has often been said — and though it is becoming platitudinous it is nonetheless true — that only through space-flight can mankind find a...