“Yes, the laws of self-preservation and of self-destruction are equally powerful in this world. The devil will hold his empire over humanity until a limit of time which is still unknown. You laugh? You do not believe in the devil? Scepticism as to the devil is a French idea, and it is also a frivolous idea. Do you know who the devil is? Do you know his name? Although you don't know his name you make a mockery of his form, following the example of Voltaire. You sneer at his hoofs, at his tail, at his horns—all of them the produce of your imagination! In reality the devil is a great and terrible spirit, with neither hoofs, nor tail, nor horns; it is you who have endowed him with these attributes! But… he is not the question just now!”

“and so, if you wish to glimpse inside a human soul and get to know a man, don't bother analyzing his ways of being silent, of talking, of weeping, or seeing how much he is moved by noble ideas; you'll get better results if you just watch him laugh. If he laughs well, he's a good man. You must, however, note all the shades of his laugh.”

“[The Devil] And after all, who knows whether proof of the devil is also proof of God? I want to join an idealist society and form an opposition within it: 'I'm a realist,' I'll say, 'not a materialist,' heh, heh!”

“All we Karamazovs are such insects. And angel as you are, that insect lives in you, too, and will stir up a tempest in your blood. Tempests, because sensual lust is a tempest - worse than a tempest! Beauty is a terrible and awful thing! It is terrible because it has not been fathomed and never can be fathomed, for God sets before us nothing but riddles. Here the boundaries meet and all contradictions exist side by side. I am not an educated nor cultured man, Alyosha, but I've thought a lot about this. It's terrible what mysteries there are! Too many riddles weigh men down on earth. We must solve as we can, and try to keep a dry skin in the water. Beauty! I can't bear the thought that a man of lofty mind and heart begins with the ideal of the Madonna and ends with the ideal of Sodom. What's still more awful is that a man with the ideal of Sodom in his soul does not renounce the ideal of the Madonna, and his heart may be on fire with that ideal, genuinely on fire, just as in his days of youth and innocence. Yes, man is broad, too broad. I'd have him narrower. The devil only knows what to make of it! What to the mind is shameful is beauty and nothing else to the heart. Is there beauty in Sodom? Believe me, that for the immense mass of mankind beauty is found in Sodom. Did you know that secret? The awful thing is that beauty is mysterious as well as terrible. God and the devil are fighting there and the battlefield is the heart of man.”

“Speak of a wolf and you see his tail!”

“No, evidently habit means a lot. The devil knows what habit can do to a person.”

“Yes, Lise. You see, your question whether we do not despise that unhappy man by dissecting his soul was the question of a person who has suffered a lot. I'm afraid I don't know how to put it properly, but a person to whom such questions occur is himself capable of suffering.”