“… respecto al origen del mundo, si es que lo tuvo, no nos queda más remedio que aceptar que nunca sabremos cómo ocurrió y que Dios es una explicación necia que no explica nada pues es tan difícil imaginar la eternidad suya como la de la materia. Dios es la vuelta del bobo: lo postulamos para entender cuanto no entendemos, pero sin entenderlo a Él.”

“…evolution is not a religious tenet, to which one swears allegiance or belief as a matter of faith.. It is a factual reality of the empirical world. Just as one would not say ‘I believe in gravity,” one should not proclaim ‘I believe in evolution.”

“Science, my boy, is made up of mistakes, but they are mistakes which it is useful to make, because they lead little by little to the truth.”

“…What I have denied and what my reason compels me to deny, is the existence of a Being throned above us as a god, directing our mundane affairs in detail, regarding us as individuals, punishing us, rewarding us as human judges might.When the churches learn to take this rational view of things, when they become true schools of ethics and stop teaching fables, they will be more effective than they are to-day… If they would turn all that ability to teaching this one thing – the fact that honesty is best, that selfishness and lies of any sort must surely fail to produce happiness – they would accomplish actual things. Religious faiths and creeds have greatly hampered our development. They have absorbed and wasted some fine intellects. That creeds are getting to be less and less important to the average mind with every passing year is a good sign, I think, although I do not wish to talk about what is commonly called theology.The criticisms which have been hurled at me have not worried me. A man cannot control his beliefs. If he is honest in his frank expression of them, that is all that can in justice be required of him. Professor Thomson and a thousand others do not in the least agree with me. His criticism of me, as I read it, charged that because I doubted the soul’s immortality, or ‘personality,’ as he called it, my mind must be abnormal, ‘pathological,’ in other, words, diseased… I try to say exactly what I honestly believe to be the truth, and more than that no man can do. I honestly believe that creedists have built up a mighty structure of inaccuracy, based, curiously, on those fundamental truths which I, with every honest man, must not alone admit but earnestly acclaim.I have been working on the same lines for many years. I have tried to go as far as possible toward the bottom of each subject I have studied. I have not reached my conclusions through study of traditions; I have reached them through the study of hard fact. I cannot see that unproved theories or sentiment should be permitted to have influence in the building of conviction upon matters so important. Science proves its theories or it rejects them. I have never seen the slightest scientific proof of the religious theories of heaven and hell, of future life for individuals, or of a personal God. I earnestly believe that I am right; I cannot help believing as I do… I cannot accept as final any theory which is not provable. The theories of the theologians cannot be proved. Proof, proof! That is what I always have been after; that is what my mind requires before it can accept a theory as fact. Some things are provable, some things disprovable, some things are doubtful. All the problems which perplex us, now, will, soon or late, be solved, and solved beyond a question through scientific investigation. The thing which most impresses me about theology is that it does not seem to be investigating. It seems to be asserting, merely, without actual study….Moral teaching is the thing we need most in this world, and many of these men could be great moral teachers if they would but give their whole time to it, and to scientific search for the rock-bottom truth, instead of wasting it upon expounding theories of theology which are not in the first place firmly based. What we need is search for fundamentals, not reiteration of traditions born in days when men knew even less than we do now.[Columbian Magazine interview]”

“(Ivan) Hold your tongue, or I’ll kill you!(The devil) You’ll kill me? No, excuse me, I will speak. I came to treat myself to that pleasure. Oh, I love the dreams of my ardent young friends, quivering with eagerness for life! ‘There are new men,’ you decided last spring, when you were meaning to come here, ‘they propose to destroy everything and begin with cannibalism. Stupid fellows! they didn’t ask my advice! I maintain that nothing need be destroyed, that we only need to destroy the idea of God in man, that’s how we have to set to work. It’s that, that we must begin with. Oh, blind race of men who have no understanding! As soon as men have all of them denied God — and I believe that period, analogous with geological periods, will come to pass — the old conception of the universe will fall of itself without cannibalism, and, what’s more, the old morality, and everything will begin anew. Men will unite to take from life all it can give, but only for joy and happiness in the present world. Man will be lifted up with a spirit of divine Titanic pride and the man-god will appear. From hour to hour extending his conquest of nature infinitely by his will and his science, man will feel such lofty joy from hour to hour in doing it that it will make up for all his old dreams of the joys of heaven. Everyone will know that he is mortal and will accept death proudly and serenely like a god. His pride will teach him that it’s useless for him to repine at life’s being a moment, and he will love his brother without need of reward. Love will be sufficient only for a moment of life, but the very consciousness of its momentariness will intensify its fire, which now is dissipated in dreams of eternal love beyond the grave’… and so on and so on in the same style. Charming!Ivan sat with his eyes on the floor, and his hands pressed to his ears, but he began trembling all over. The voice continued.(The devil) The question now is, my young thinker reflected, is it possible that such a period will ever come? If it does, everything is determined and humanity is settled for ever. But as, owing to man’s inveterate stupidity, this cannot come about for at least a thousand years, everyone who recognises the truth even now may legitimately order his life as he pleases, on the new principles. In that sense, ‘all things are lawful’ for him. What’s more, even if this period never comes to pass, since there is anyway no God and no immortality, the new man may well become the man-god, even if he is the only one in the whole world, and promoted to his new position, he may lightheartedly overstep all the barriers of the old morality of the old slaveman, if necessary. There is no law for God. Where God stands, the place is holy. Where I stand will be at once the foremost place… ‘all things are lawful’ and that’s the end of it! That’s all very charming; but if you want to swindle why do you want a moral sanction for doing it? But that’s our modern Russian all over. He can’t bring himself to swindle without a moral sanction. He is so in love with truth-.”

“Interviewer: Didn’t Sagan want to believe?Druyan: he didn’t want to believe. he wanted to know.”

“I’m frequently asked, “Do you believe there’s extraterrestrial intelligence?” I give the standard arguments- there are a lot of places out there, the molecules of life are everywhere, I use the word billions, and so on. Then I say it would be astonishing to me if there weren’t extraterrestrial intelligence, but of course there is as yet no compelling evidence for it.Often, I’m asked next, “What do you really think?”I say, “I just told you what I really think.””Yes, but what’s your gut feeling?”But I try not to think with my gut. If I’m serious about understanding the world, thinking with anything besides my brain, as tempting as that might be, is likely to get me into trouble. Really, it’s okay to reserve judgment until the evidence is in.”

“The time will come when diligent research over long periods will bring to light things which now lie hidden. A single lifetime, even though entirely devoted to the sky, would not be enough for the investigation of so vast a subject… And so this knowledge will be unfolded only through long successive ages. There will come a time when our descendants will be amazed that we did not know things that are so plain to them… Many discoveries are reserved for ages still to come, when memory of us will have been effaced.”

“Of all the major religions, or lack thereof, the atheist’s is one of the best pretenders: his foundation for all existences, as well as moral behaviors for the permanent good of mankind, begins at science but ends at himself, the Napoleon complex of both intelligence and imagination. On the other hand the anti-theist wouldn’t survive without a deity beyond himself to hunt. He doesn’t pretend, he simply nullifies his own position.”

“Please understand something. God didn’t create evil in the world, but He did create free will, which allowed for the possibility of evil. Science isn’t like that. What you explore and find, God did create. It already exists. When you find it, you are discovering something God made. And everything God created is good. God said so in Genesis. He looked around at everything He had made and said, ‘It is very good.’”“How men use science can be evil, I’m with you a hundred percent on that,” Bishop added. “People can misuse items God created. But that has everything to do with man’s free will and tendency to evil, not science. What God created is good. So do what you were created to do. Break new scientific ground. Help us understand the dynamics of what God created.“You can’t protect the world from itself, Gina. You can only give good men the tools necessary to do their jobs. We need to know what is possible.”

“The opposite of a correct statement is a false statement. But the opposite of a profound truth may well be another profound truth.”

“I do not know what I may appear to the world, but to myself I seem to have been only like a boy playing on the sea-shore, and diverting myself in now and then finding a smoother pebble or a prettier shell than ordinary, whilst the great ocean of truth lay all undiscovered before me.”

“Who is more humble? The scientist who looks at the universe with an open mind and accepts whatever the universe has to teach us, or somebody who says everything in this book must be considered the literal truth and never mind the fallibility of all the human beings involved?”

“For me, it is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring.”

“A thinker sees his own actions as experiments and questions–as attempts to find out something. Success and failure are for him answers above all.”