We may lay it down as a rule that the older the exercise of any power, the more benign it will appear, and the more recent its assumption, the more unnatural and even dangerous it will seem. John Kenneth Galbraith
That a thing is unnatural, in any precise meaning which can be attached to the word, is no argument for its being blamable; since the most criminal actions are to a being like man not more unnatural than most of the virtues. John Stuart Mill
I know not which lives more unnatural lives, Obeying husbands, or commanding wives. Benjamin Franklin