From Brothers Karamazov by Fyodor Dostoevsky:
"Listen! If all must suffer to pay for the eternal harmony, what have children to do with it, tell me, please? It's beyond all comprehension why they should suffer, and why they should pay for the harmony. Why should they, too, furnish material to enrich the soil for the harmony of the future? I understand solidarity in sin among men. I understand solidarity in retribution, too; but there can be no such solidarity with children ....I understand, of course, what an upheaval of the universe it will be, when everything in heaven and earth blends in one hymn of praise and everything that lives and has lived cries aloud: ‘Thou art just, O Lord, for Thy ways are revealed.’ When the mother embraces the fiend who threw her child to the dogs, and all three cry aloud with tears, ‘Thou art just, O Lord!’ then, of course, the crown of knowledge will be reached and all will be made clear.
...I, too, perhaps, may cry aloud with the rest, looking at the mother embracing the child's torturer, ‘Thou art just, O Lord!’ but I don't want to cry aloud then. While there is still time, I hasten to protect myself, and so I renounce the higher harmony altogether. It's not worth the tears of that one tortured child who beat itself on the breast with its little fist and prayed in its stinking outhouse, with its unexpiated tears to ‘dear, kind God’!
It's not worth it, because those tears are unatoned for. They must be atoned for, or there can be no harmony. But how? How are you going to atone for them? Is it possible? By their being avenged? But what do I care for avenging them? What do I care for a hell for oppressors? What good can hell do, since those children have already been tortured? And what becomes of harmony, if there is hell? I want to forgive. I want to embrace. I don't want more suffering.
And if the sufferings of children go to swell the sum of sufferings which was necessary to pay for truth, then I protest that the truth is not worth such a price. I don't want the mother to embrace the oppressor who threw her son to the dogs! She dare not forgive him! Let her forgive him for herself, if she will, let her forgive the torturer for the immeasurable suffering of her mother's heart. But the sufferings of her tortured child she has no right to forgive; she dare not forgive the torturer, even if the child were to forgive him! And if that is so, if they dare not forgive, what becomes of harmony? Is there in the whole world a being who would have the right to forgive and could forgive?
...'No, I can't admit it. Brother,' said Alyosha suddenly, with flashing eyes, 'you said just now, is there a being in the whole world who would have the right to forgive and could forgive? But there is a Being and He can forgive everything, all and for all, because He gave His innocent blood for all and everything. You have forgotten Him, and on Him is built the edifice, and it is to Him they cry aloud,‘Thou art just, O Lord, for Thy ways are revealed!’ ' "