" But even when a man has offended against his own rational code, I doubt whether a sense of sin is the best method of arriving at a better way of life. There is in the sense of sin something abject, something lacking in self-respect. No good was ever done to any one by the loss of self-respect. The rational man will regard his own undesirable acts, as he regards those of others, as acts produced by certain circumstances, and to be avoided either by a fuller realization that they are undesirable, or, where this is possible, by avoidance of the circumstances that caused them. "

― Bertrand Russell , The Conquest of Happiness