It must be conceded that a theory has an important advantage if its basic concepts and fundamental hypotheses are 'close to experience,' and greater confidence in such a theory is certainly justified. There is less danger of going completely astray, particularly since it takes so much less time and effort to disprove such theories by experience. Yet more and more, as the depth of our knowledge increases, we must give up this advantage in our quest for logical simplicity in the foundations of physical theory.

I want to know what God thinks. The rest are details.

My deep religiosity [...] found an abrupt ending at the age of twelve, through the reading of popular scientific books.

I cannot write in English, because of the treacherous spelling. When I am reading, I only hear it and am unable to remember what the written word looks like.

Something deeply hidden had to be behind things.

Creativity is contagious. Pass it on.

Germany had the misfortune of becoming poisoned, first because of plenty, and then because of want.