There are many things you shouldn't measure. Don't, for example, try to measure how much you love your wife!

No one who has understood even a fraction of what science has told us about the universe can fail to be in awe of both the cosmos and of science.

I don't believe in God because certain reasons and arguments weigh more heavily in my mind than others, not because I have willfully decided to reject my creator, as many religious people seem to think. I could no more simply decide to believe in God than I could decide to like beetroot, just like that.

Society needs both justice and compassion, a head and a heart, if it is to be civilised.

We can't control whether we are rewarded for our endeavours, with cash or recognition. It is not up to us how much cash or time we get on Earth, but it is down to us how we spend it.

Christmas is a rare occasion when we are reminded that we have obligations to people we did not choose to be related to, and that love is not just a spontaneous feeling but something we sometimes really have to work at, with people we may not even much like.

Stress means something different if it is the result of rewarding work rather than struggling to keep the family out of debt.