The law of servitude in marriage is a monstrous contradiction to all the principles of the modern world, and to all the experience through which those principles have been slowly and painfully worked out. It is the sole case, now that negro slavery has been abolished, in which a human being in the plenitude of every faculty is delivered up to the tender mercies of another human being, in the hope forsooth that this other will use the power solely for the good of the person subjected to it. Marriage is the only actual bondage known to our law. There remain no legal slaves, except the mistress of every house.
John Stuart Mill, The Subjection of Women, 1869.
