My intellectual development was retarded, as a result of which I began to wonder about space and time only when I had already grown up.

He who can no longer pause to wonder and stand rapt in awe, is as good as dead; his eyes are closed.

The pursuit of truth and beauty is a sphere of activity in which we are permitted to remain children all our lives.

A human being is a part of the whole, called by us "Universe", a part limited in time and space.

Space by itself, and time by itself, are doomed to fade away into mere shadows, and only a kind union of the two will preserve an independent reality

Matter tells space how to curve, space tells matter how to move.