The truest definition of evil is that which represents it as something contrary to nature; evil is evil because it is unnatural; a vine which should bear olive-berries, an eye to which blue seems yellow, would be diseased; an unnatural mother, an unnatural son, an unnatural act, are the strongest terms of condemnation.
Frederick William Robertson (1858). “Sermons Preached at Trinity Chapel, Brighton: Third Series”, p.23
