“How much misery…how much needless despair has been caused by a series of biological mismatches, a misalignment of the hormones and pheromones? Resulting in the fact that the one you love so passionately won’t or can’t love you. As a species we’re pathetic in that way: imperfectly monogamous. If only we could pair-bond for life, like gibbons, or else opt for total-guilt free promiscuity, there’d be no more sexual torment. You’d never want someone you couldn’t have’ ‘…But think what we’d be giving up…we’d be human robots…there’d be no free choice.’‘…we’re human robots anyway, only we’re faulty ones.”

“...how much needless despair has been caused by a series of biological mismatches, a misalignment of the hormones and pheromones? Resulting in the fact that the one you love so passionately won't or can't love you. As a species we're pathetic that way: imperfectly monogamous.”

“…Homo sapiens doesn’t seem able to cut himself off at the supply end. He’s one of the few species that doesn’t limit reproduction in the face of dwindling resources. In other words - and up to a point, of course - the less we eat, the more we fuck.’‘How do you account for that?’ said Jimmy.‘Imagination,’ said Crake, ‘Men can imagine their own deaths, they can see them coming, and the mere thought of impending death acts like an aphrodisiac. A dog or a rabbit doesn’t behave like that. Take birds - in a lean season they cut down on the eggs, or they don’t mate at all. They put their energy into staying alive themselves until times get better. But human beings hope they can stick their souls into someone else, some new version of themselves, and live on forever.’‘As a species we’re doomed by hope then?’ ‘You could call it hope. That, or desperation.’ ‘But we’re doomed without hope, as well,’ said Jimmy.‘Only as individuals,’ said Crake cheerfully.‘Well, it sucks.’‘Jimmy, grow up.’Crake wasn’t the first person who ever said that to Jimmy.”

“I could see how you could do extreme things for the person you loved. Adam One said that when you loved a person, that love might not always get returned the way you wanted, but it was a good thing anyway because love went out all around you like an energy wave, and a creature you didn't know would be helped by it.”

“What is it the I'll want from you? Not love: that would be too much to ask. Not forgiveness, which isn't yours to bestow. Only a listener, perhaps; only someone who will see me. Don't prettify me though, whatever else you do: I have no wish to be a decorated skull. But I leave myself in your hands. What choice do I have? By the time you read this last page, that- if anywhere- is the only place I will be.”

“We ate the birds. We ate them. We wanted their songs to flow up through our throats and burst out of our mouths, and so we ate them. We wanted their feathers to bud from our flesh. We wanted their wings, we wanted to fly as they did, soar freely among the treetops and the clouds, and so we ate them. We speared them, we clubbed them, we tangled their feet in glue, we netted them, we spitted them, we threw them onto hot coals, and all for love, because we loved them. We wanted to be one with them. We wanted to hatch out of clean, smooth, beautiful eggs, as they did, back when we were young and agile and innocent of cause and effect, we did not want the mess of being born, and so we crammed the birds into our gullets, feathers and all, but it was no use, we couldn’t sing, not effortlessly as they do, we can’t fly, not without smoke and metal, and as for the eggs we don’t stand a chance. We’re mired in gravity, we’re earthbound. We’re ankle-deep in blood, and all because we ate the birds, we ate them a long time ago, when we still had the power to say no.”

“Falling in love, although it resulted in altered body chemistry and was therefore real, was a hormonally induced delusional state, according to him. In addition it was humiliating, because it put you at a disadvantage, it gave the love object too much power. As for sex per se, it lacked both challenge and novelty, and was on the whole a deeply imperfect solution to the problem of intergenerational genetic transfer.”