If the genius of invention were to reveal to-morrow the secret of immortality, of eternal beauty and youth, for which all humanity is aching, the same inexorable agents which prevent a mass from changing suddenly its velocity would likewise resist the force of the new knowledge until time gradually modifies human thought.

The Buddhist expresses it in one way, the Christian in another, but both say the same: We are all one.

It’s not the love you make. It's the love you give.

The present is theirs; the future, for which I really worked, is mine.

We may produce at will, from a sending station. an electrical effect in any particular region of the globe; we may determine the relative position or course of a moving object, such as a vessel at sea, the distance traversed by the same, or its speed.

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

The beauty and the scent of roses can be used as a medicine and the sun rays as a food.