“You can make some inferences about a man's character if you know something about the conditions in which he has survived and prospered.”

“For more than three thousand million years, DNA has been the only replicator worth talking about in the world. But it does not necessarily hold these monopoly rights for all time. Whenever conditions arise in which a new kind of replicator can make copies of itself, the new replicators will tend to take over, and start a new kind of evolution of their own.”

“We are all atheists about most of the gods that humanity has ever believed in. Some of us just go one god further.”

“unlike, say, the sun, or the rainbow, or earthquakes, the fascinating world of the very small never came to the notice of primitive peoples. if you think about this for a minute, it's not really surprising.. they had no way of even knowing it was there, and so of course they didn't invent any myths to explain it. it wasn't until the microscope was invented in the sixteenth century that people discovered that ponds and lakes, soil and dust, even our body, teem with tiny living creatures, too small to see, yet too complicated and, in their own way, beautiful, or perhaps frightening, depending on how you think about them.the whole world is made of incredibly tiny things, much too small to be visible to the naked eye - and yet none of the myths or so-called holy books that some people, even now, think were given to us by an all knowing god, mentions them at all. in fact, when you look at those myths and stories, you can see that they don't contain any of the knowledge that science has patiently worked out. they don't tell us how big or how old the universe is; they don't tell us how to treat cancer; they don't explain gravity or the internal combustion engine; they don't tell us about germs, or nuclear fusion, or electricity, or anaesthetics. in fact, unsurprisingly, the stories in holy books don't contain any more information about the world than was known to the primitive people who first started telling them. if these 'holly books' really were written, or dictated, or inspired, by all knowing gods, don't you think it's odd that those gods said nothing about any of these important and useful things?”

“The take-home message is that we should blame religion itself, not religious extremism - as though that were some kind of terrible perversion of real, decent religion. Voltaire got it right long ago: 'Those who can make you believe absurdities can make you commit atrocities.' So did Bertrand Russell: 'Many people would sooner die than think. In fact they do.”

“Alister McGrath has now written two books with my name in the title. The poet W. B. Yeats, when asked to say something about bad poets who made a living by parasitizing him, wrote the splendid line, 'was there ever dog that praised his fleas?”

“What lies at the heart of every living thing is not a fire, not warm breath, not a 'spark of life.' It is information, words, instructions... If you want to understand life, don't think about vibrant, throbbing gels and oozes, think about information technology.”