Creating a new theory is not like destroying an old barn and erecting a skyscraper in its place. It is rather like climbing a mountain and gaining new and wider views.

I thought of that while riding my bicycle.

I am by heritage a Jew, by citizenship a Swiss, and by makeup a human being, and only a human being, without any special attachment to any state or national entity whatsoever.

Music has no effect on research work, but both are born of the same source and complement each other through the satisfaction they bestow

You accept the historical Jesus?

Except in mathematics, the shortest distance between point A and point B is seldom a straight line. I don't believe in mathematics.

Without the sense of fellowship with men of like mind, of preoccupation with the objective, the eternally unattainable in the field of art and scientific research, life would have seemed to me empty.