Bottom 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 PolkinghorneScience cannot tell theology how to construct a doctrine of creation, but you can't construct a doctrine of creation without taking account of the age of the universe and the evolutionary character of cosmic history.
John PolkinghorneWell, it's because I gladly acknowledge some ideas that are part of process theology, but which I think are not tied to all the details of process thought, and are very illuminating and helpful.
John PolkinghorneAfter all, the universe required ten billion years of evolution before life was even possible; the evolution of the stars and the evolving of new chemical elements in the nuclear furnaces of the stars were indispensable prerequisites for the generation of life.
John Polkinghorne