You cannot disturb the tiniest petal of a flower without the troubling of a distant star.

In Einstein's theory of relativity the observer is a man who sets out in quest of truth armed with a measuring-rod. In quantum theory he sets out with a sieve.

There was a time when we wanted to be told what an electron is. The question was never answered. No familiar conceptions can be woven around the electron; it belongs to the waiting list.

Philosophically, the notion of a beginning of the present order of Nature is repugnant to me ... I should like to find a genuine loophole.

Events do not happen; they are just there, and we come across them.

The word reality frightens me.

It is also a good rule not to put overmuch confidence in the observational results that are put forward until they are confirmed by theory.