Suppose that you could mark the molecules in a glass of water; then pour the contents of the glass into the ocean and stir the latter throughly so as to distribute the marked molecules uniformly throughout the seven seas; if then you took a glass of water anywhere out of the ocean, you would find in it about a hundred of your marked molecules.

Vortices of pure energy can exist and, if my theories are right, can compose the bodily form of an intelligent species.

Radio has no future." "X-rays are clearly a hoax". "The aeroplane is scientifically impossible.

Although mechanical energy is indestructible, there is a universal tendency to its dissipation, which produces throughout the system a gradual augmentation and diffusion of heat, cessation of motion and exhaustion of the potential energy of the material Universe

I have no satisfaction in formulas unless I feel their numerical magnitude.

The atheistic idea is so nonsensical that I do not see how I can put it in words.

I have not had a moment's peace or happiness in respect to electromagnetic theory since November 28, 1846. All this time I have been liable to fits of ether dipsomania, kept away at intervals only by rigorous abstention from thought on the subject.