The 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.

Nevertheless, all of us who work in quantum physics believe in the reality of a quantum world, and the reality of quantum entities like protons and electrons.

The remarkable insights that science affords us into the intelligible workings of the world cry out for an explanation more profound than that which itself can provide. Religion, if it is to take seriously its claim that the world is the creation of god, must be humble enough to learn from science what that world is actually like. The dialogue between them can only be mutually enriching.

Hope is much more than a mood. It involves a commitment to action.... What we hope for should be what we are prepared to work for...as far as that power lies in us.

When you realize that the laws of nature must be incredibly finely tuned to produce the universe we see, that conspires to plant the idea that the universe did not just happen, but that there must be a purpose behind it.

Evolution, of course, is not something that simply applies to life here on earth; it applies to the whole universe.

Theologians have a great problem because they're seeking to speak about God. Since God is the ground of everything that is, there's a sense in which every human inquiry is grist to the theological mill. Obviously, no theologian can know everything.