In the twenty-first century, the robot will take the place which slave labor occupied in ancient civilization.

The entire Earth will be converted into a huge brain

My wireless transmitter does not use Hertzian waves, which are a grievous myth, but sound waves in the aether.

My ear barely caught signals coming in regular succession which could not have been produced on earth.

The progressive development of man [has as its] ultimate purpose the complete mastery of mind over the material world.

Invention is the most important product of man's creative brain. The ultimate purpose is the complete mastery of mind over the material world, the harnessing of human nature to human needs.

I cannot exaggerate the effect of this marvelous sight on my childish imagination. Day after day I asked myself what is electricity and found no answer. Eighty years have gone by since and I still ask the same question, unable to answer it.