Sins of untruthfulness are not so seductive or, usually, so serious as those we have been considering; but for that reason they are perhaps more pervasive - we are less on our guard against them. What are the reasons for the obligation of truthfulness? Truthfulness means trustworthiness. The organization of society could not be maintained without mutual confidence. This general need and the specific harm done to the individual lied to, if he is thereby misled, are sufficiently plain. [Footnote: I will content myself with quoting one sentence from Mill (Utilitarianism, chap. II), warning the reader to take a deep breath before he plunges in: "Inasmuch as the cultivation in ourselves of a sensitive feeling on the subject of veracity is one of the most useful, and the enfeeblement of that feeling one of the most hurtful, things to which our conduct can be instrumental; and inasmuch as any, even unintentional, deviation from truth does that much towards weakening the trustworthiness of human assertion, which is not only the principal support of all present social well-being, but the insufficiency of which does more than any one [other] thing that can be named to keep back civilization, virtue, everything on which human happiness on the largest scale depends, - we feel that the violation, for a present advantage, of a rule of such transcendent expediency, is not expedient, and that he who, for the sake of a convenience to himself or to some other individual, does what depends on him to deprive mankind of the good, and inflict upon them the evil, involved in the greater or less reliance which they can place in each others' words, acts the part of one of their worst enemies."] The evil resulting to the man who lies is less generally recognized. We may summarize it under three heads: (1) It is much simpler and less worrisome, usually, to tell the truth. A lie is apt to be scantly on our guard; and one lie is very likely to need propping by others. We are led easily into deep waters, and discover "what a tangled web we weave When first we practice to deceive." But when we tell the truth, we have no need to remember what we said; there is a carefree heartiness about the life that is open and aboveboard that the liar, unless he has given up trying to maintain a reputation, never knows.