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

A single ray of light from a distant star falling upon the eye of a tyrant in bygone times may have altered the course of his life, may have changed the destiny of nations, may have transformed the surface of the globe, so intricate, so inconceivably complex are the processes in Nature.

It seems that I have always been ahead of my time. I had to wait nineteen years before Niagara was harnessed by my system, fifteen years before the basic inventions for wireless which I gave to the world in 1893 were applied universally.

Every living being is an engine geared to the wheel-work of the universe.

The last 29 days of the month are the toughest!

Electric power is everywhere present in unlimited quantities and can drive the world's machinery without the need of coal, oil, gas, or any other of the common fuels.

We crave for new sensations but soon become indifferent to them. The wonders of yesterday are today common occurrences