Exceptional claims, require exceptional evidence.

I think that there is no supernatural dimension. The natural world is quite wonderful enough. The more we know about it, the much more wonderful it is than any supernatural proposition.

[Concerning monotheistic religions] The only thing these hysterical cults have in common is the belief that this world will be consumed, and deservedly so, when the moment is ripe. They also, all of them, profess a great disdain for earthly possessions. Yet they pass the intervening time in haggling over the most trivial and paltry property rights, over caves and rocks and disputable pieces of archeological rubbish.

If you want to stay in for the long haul, and lead a life that is free from illusions either propagated by you or embraced by you, then I suggest you learn to recognize and avoid the symptoms of the zealot and the person who knows he is right. For the dissenter, the skeptical mentality is at least as important as any armor of principle.

If religious instruction were not allowed until the child had attained the age of reason, we would be living in a quite different world.

I have not been able to discover whether there exists a precise French equivalent for the common Anglo-American expression 'killing time.' It's a very crass and breezy expression, when you ponder it for a moment, considering that time, after all, is killing us.

Religion has run out of justifications. Thanks to the telescope and the microscope, it no longer offers an explanation of anything important. Where once it used to able, by its total command of a worldview, to prevent the emergence of rivals, it can now only impede and retard-or try to turn back-the measureable advances that we have made.