“[Letter to his wife, Natalia Sedova]In addition to the happiness of being a fighter for the cause of socialism, fate gave me the happiness of being her husband. During the almost forty years of our life together she remained an inexhaustible source of love, magnanimity, and tenderness. She underwent great sufferings, especially in the last period of our lives. But I find some comfort in the fact that she also knew days of happiness.For forty-three years of my conscious life I have remained a revolutionist; for forty-two of them I have fought under the banner of Marxism. If I had to begin all over again I would of course try to avoid this or that mistake, but the main course of my life would remain unchanged. I shall die a proletarian revolutionist, a Marxist, a dialectical materialist, and, consequently, an irreconcilable atheist. My faith in the communist future of mankind is not less ardent, indeed it is firmer today, than it was in the days of my youth.Natasha has just come up to the window from the courtyard and opened it wider so that the air may enter more freely into my room. I can see the bright green strip of grass beneath the wall, and the clear blue sky above the wall, and sunlight everywhere. Life is beautiful. Let the future generations cleanse it of all evil, oppression and violence, and enjoy it to the full.”

“God will never be an atheist because he believes in himself.”

“Once a friend asked me if God appeared in front of you and asked what you want? Think he (god) can make it happen anything, anything humans can’t even image off. Let me know what you will ask?First, you must know my belief. Second, by this time now you must know me; that I won’t ask anything to anyone. To answer your hypothetical question, I won’t ask him (God) anything. Instead, I would love to say from the bottom of my heart, Fuck You.”

“Religion is great at instilling the fear of hell, but awful at giving a taste of heaven.”

“She was not a Christian in the accepted sense; she did not believe that God had ever worked among us as a young artisan.”

“Ours is an illusionless humanism that cares about protecting our species, especially from itself. We must forgive humanity, and ourselves, for being what we are – neither angels nor beasts…”

“Silence leads to acceptance, which leads to liberation. All of our conditioning is then suspended; so, too, are morals, manners, even simple courtesy. Dogmas, rules, commandments, churches, political parties, opinions, doctrines, ideologies, and gurus fall away. All that remains is reality. All that remains is truth. How free we suddenly feel!”

“God was seldom discussed in our family except in a very distant sort of way, rather like our cousins in Canada.”

“I know why this is Lucy’s favorite song. Lucy believes in a world that’s fair. As she recites, clear and crisp, I realize I believe in that world, too. I just don’t believe in a god who will create it for us. I think we’ll have to do it on our own.”

“Religion is one of the oils with which we alleviate the friction between those who have a lot and those who have nothing.”

“At least all Gods except one are man-made.”

“Atheism is the opium of the mathematicians. Atheism is the religion of Mathematics.”

“Someone with a fresh mind, one not conditioned by upbringing and environment, would doubtless look at science and the powerful reductionism that it inspires as overwhelmingly the better mode of understanding the world, and would doubtless scorn religion as sentimental wishful thinking. Would not that same uncluttered mind also see the attempts to reconcile science and religion by disparaging the reduction of the complex to the simple as attempts guided by muddle-headed sentiment and intellectually dishonest emotion?…Religion closes off the central questions of existence by attempting to dissuade us from further enquiry by asserting that we cannot ever hope to comprehend. We are, religion asserts, simply too puny. Through fear of being shown to be vacuous, religion denies the awesome power of human comprehension. It seeks to thwart, by encouraging awe in things unseen, the disclosure of the emptiness of faith. Religion, in contrast to science, deploys the repugnant view that the world is too big for our understanding. Science, in contrast to religion, opens up the great questions of being to rational discussion, to discussion with the prospect of resolution and elucidation. Science, above all, respects the power of the human intellect. Science is the apotheosis of the intellect and the consummation of the Renaissance. Science respects more deeply the potential of humanity than religion ever can.”

“Don’t creationists ever wonder about the fact that the paleontologists found ape-like skulls with the ‘human leg and foot bones,’ rather than the other way around, i.e., human skulls with ‘ape leg and foot bones?’ . . . Come on, creationists, think about it! Did God hide the human skulls, only leaving behind leg and foot bones belonging to human midgets with misshapen feet, and mix such bones only with the skulls of ape-like creatures with larger cranial capacities than living apes? What a ‘kidder’ the creationists’ God must be.”

“Creationists eagerly seek a gap in present-day knowledge or understanding. If an apparent gap is found, it is assumed that God, by default, must fill it.”