I was very much on the mathematical side, where you probably do your best work before you're forty-five. Having passed that significant date, I thought I would do something else.
John PolkinghorneThe test of a theory is its ability to cope with all the relevant phenomena, not its a priori 'reasonableness'. The latter would have proved a poor guide in the development of science, which often makes progress by its encounter with the totally unexpected and initially extremely puzzling.
John PolkinghorneBottom up thinkers try to start from experience and move from experience to understanding. They don't start with certain general principles they think beforehand are likely to be true; they just hope to find out what reality is like.
John PolkinghorneIf the experience of science teaches anything, it's that the world is very strange and surprising. The many revolutions in science have certainly shown that.
John Polkinghorne