The fact that there are rules at all to be checked is a kind of miracle; that it is possible to find a rule, like the inverse square law of gravitation, is some sort of miracle. It is not understood at all, but it leads to the possibility of prediction — that means it tells you what you would expect to happen in an experiment you have not yet done.

The Meaning of It All: Thoughts of a Citizen Scientist, Chapter I (p. 23), Perseus Books. 1998