I do not think you can name many great inventions that have been made by married men.

— Nikola Tesla

If he [Thomas Edison] had a needle to find in a haystack, he would not stop to reason where it was most likely to be, but would proceed at once with the feverish diligence of a bee, to examine straw after straw until he found the object of his search. … Just a little theory and calculation would have saved him ninety percent of his labor.

— Nikola Tesla

If we want to reduce poverty and misery, if we want to give to every deserving individual what is needed for a safe existence of an intelligent being, we want to provide more machinery, more power. Power is our mainstay, the primary source of our many-sided energies.

— Nikola Tesla

If you want to find the secrets of the universe, think in terms of energy, frequency and vibration.

— Nikola Tesla

In a time not distant, it will be possible to flash any image formed in thought on a screen and render it visible at any place desired. The perfection of this means of reading thought will create a revolution for the better in all our social relations.

— Nikola Tesla

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.

— Nikola Tesla

Let the future tell the truth, and evaluate each one according to his work and accomplishments. The present is theirs; the future, for which I have really worked, is mine.

— Nikola Tesla

Life is and will ever remain an equation incapable of solution, but it contains certain known factors.

— Nikola Tesla

Modern science says: 'The sun is the past, the earth is the present, the moon is the future.' From an incandescent mass we have originated, and into a frozen mass we shall turn. Merciless is the law of nature, and rapidly and irresistibly we are drawn to our doom.

— Nikola Tesla

Now the soft-voiced gentle woman of my reverent worship has all but vanished.

— Nikola Tesla