The law of conservation of energy tells us we can't get something for nothing, but we refuse to believe it.
Isaac AsimovCreationists make it sound as though a 'theory' is something you dreamt up after being drunk all night.
Isaac AsimovWhen asked for advice by beginners. Know your ending, I say, or the river of your story may finally sink into the desert sands and never reach the sea.
Isaac Asimov