In a crystal we have clear evidence of the existence of a formative life principle, and though we cannot understand the life of a crystal, it is nonetheless a living being

It is a simple feat of scientific electrical engineering — only expensive — blind, faint-hearted, doubting world.

When natural inclination develops into a passionate desire, one advances towards his goal in seven-league boots.

Marconi is a good fellow. Let him continue. He is using seventeen of my patents.

My mother understood human nature better and never chided. She knew that a man cannot be saved from his own foolishness or vice by someone else's efforts or protests, but only by the use of his own will.

Our entire biological system, the brain, and the Earth itself, work on the same frequencies.

I do not think there is any thrill that can go through the human heart like that felt by the inventor as he sees some creation of the brain unfolding to success ... Such emotions make a man forget food, sleep, friends, love, everything.