There are few enough people with sufficient independence to see the weaknesses and follies of their contemporaries and remain themselves untouched by them.

The man with the greatest soul will always face the greatest war with the low minded person.

Although I am a typical loner in my daily life, my awareness of belonging to the invisible community of those who strive for truth, beauty, and justice has prevented me from feelings of isolation.

The relativity principle in connection with the basic Maxwellian equations demands that the mass should be a direct measure of the energy contained in a body; light transfers mass. With radium there should be a noticeable diminution of mass. The idea is amusing and enticing; but whether the Almighty is laughing at it and is leading me up the garden path -- that I cannot know.

Problems cannot be solved by thinking within the framework in which the problems were created.

When you are courting a nice girl an hour seems like a second. When you sit on a red-hot cinder a second seems like an hour. That's relativity.

Those who have the privilege to know have the duty to act.