Nothing limits intelligence more than ignorance; nothing fosters ignorance more than one's own opinions; nothing strengthens opinions more than refusing to look at reality.

Whoever declares another heretic is himself a devil. Whoever places a relic or artifact above justice, kindness, mercy, or truth is himself a devil and the thing elevated is a work of evil magic.

Do you realize it’s been only a century that we’ve been able to go from house to car to office to car to wherever, with the heater on, and the defroster on, protected from the rain and the cold? It hasn’t been much longer than that we’ve had lighting for streets. Think of all that darkness, all that world out there, all that mystery that we’ve turned into well-lighted concrete bunkers, safe and warm and dull.

I tell you, lad, that men will believe is one says, "The Gods say..." They will believe if one says, "I had a Vision..." They will believe if one says, "It was told me on a tablet of hidden gold..." But, if one says, "History teaches," then they will not believe.

I'm not sure a world run by women would be any better. They're human beings!

Sitting down and weeping is what women have done for centuries, and it has done no good at all. Nor praying. God has given us the earth. He is not waiting in the next room, ready to fix it for us if we ruin it. If we do not care for it, no one will. On other worlds, other races of men perhaps do better than we have done. He cares for us, but he does not control what we do.

We'll tell him his mother waits for him in heaven, I suppose." "Is that a lie?" "It's what we tell fools and children." She sighed. "Postulating a heaven gives man an out for having been unable to retain the paradise he was given here on earth.