Fyodor Dostoyevsky said this quote

“ Do you suppose, gentlemen, that our children as they grow up and begin to reason can avoid such questions? No, they cannot, and we will not impose on them an impossible restriction. The sight of an unworthy father involuntarily suggests tormenting questions to a young creature, especially when he compares him with the excellent fathers of his companions. The conventional answer to this question is: 'He begot you, and you are his flesh and blood, and therefore you are bound to love him.' The youth involuntarily reflects: 'But did he love me when he begot me?' he asks, wondering more and more. 'Was it for my sake he begot me? He did not know me, not even my sex, at that moment, at the moment of passion, perhaps, inflamed by wine, and he has only transmitted to me a propensity to drunkenness- that's all he's done for me.... Why am I bound to love him simply for begetting me when he has cared nothing for me all my life after?Oh, perhaps those questions strike you as coarse and cruel, but do not expect an impossible restraint from a young mind. 'Drive nature out of the door and it will fly in at the window'. ”