As a teenager, I increasingly had questions about religion to which I found no good answers.

When you do the right thing, but not to any particular person, we instinctively feel that we have earned some sort of pay back. Since no-one will do that for us, we opt for self-service reciprocation.

Justice can only be dispensed when you have all the facts in front of you.

Heathens are unredeemed outcasts from heaven who roam the planet without hope of surviving the deaths of their bodies. They may have values but they are not secured by any divine source. Yet we embrace this because we think it represents the truth.

I think that a lot of social movements, political movements, powerful ones - certainly they form, collectively, an idea of the truth which becomes hard to question. It becomes a dogma, and from the inside it starts to look like common sense.

You don't choose what you believe moment to moment, but choices you have made do shape what you come to believe.

From time to time, it is worth wandering around the fuzzy border regions of what you do, if only to remind yourself that no human activity is an island.