Ere many generations pass, our machinery will be driven by a...

Ere many generations pass, our machinery will be driven by a power obtainable at any point in the universe. This idea is not novel...We find it in the delightful myth of Antheus, who derives power from the earth; we find it among subtle speculations of one of your splendid mathematicians...throughout space there is energy. Is this energy static, or kinetic? If static our hopes are in vain; if kinetic - and this we know it is, for certain - then it is a mere question of time when men will succeed in attaching their machinery to the very wheel work of nature.