The question that drives me hazy is whether it is I or others who is crazy.

... a person who is religiously enlightened appears to me to be one who has, to the best of his ability, liberated himself from the fetters of his selfish desires and is preoccupied with thoughts, feelings, and aspirations to which he clings because of their superpersonal value.

One cannot deal with a problem with the same thinking that creates it.

The longing to behold this pre-established harmony [of phenomena and theoretical principles] is the source of the inexhaustible patience and perseverance with which Planck has devoted himself ... The state of mind which enables a man to do work of this kind is akin to that of the religious worshiper or the lover; the daily effort comes from no deliberate intention or program, but straight from the heart.

Only six men in the world know about relativity. I am not one of them. When I ask them to explain, they confused me.

A human being is part of a whole called by us the universe.

The more I learn, the more I realize I don't know.