Leslie Stephen, a consistent agnostic, and a believer in the slow evolution of morals, in his "Science of Ethics,"[1] naturally holds, like Herbert Spencer, to the gradual development of the custom of truthfulness, as a necessity of society.[2] The moral sense of primitive man, as he sees it, might seem to justify falsehood to an _enemy_, rather than, as Rothe and Smyth would claim, to those who are _wards of love_. In illustration of this he says: "The obligation to truthfulness is [primarily] limited to relations with members of the same tribe or state; and, more generally, it is curious to observe how a kind of local or special morality is often developed in regard to this virtue. The schoolboy thinks it a duty to his fellows to lie to his master, the merchant to his customer, and the servant to his employer; and, inversely, the duty is often recognized as between members of some little clique or profession, as soon as it is seen to be important for their corporate interest, even at the expense of the wider social organization. There is honor among thieves, both of the respectable and other varieties." [Footnote 1: Leslie Stephen's _Science of Ethics_, pp. 202-209.] [Footnote 2: See pp. 26-32, _supra_.] But Leslie Stephen sees that, in the progress of the race, the importance of veracity has come to a recognition, "in which it differs from the other virtues." While the law of marriage may vary at different periods, "the rule of truthfulness, on the other hand, seems to possess the _a priori_ quality of a mathematical axiom.... Truth, in short, being always the same, truthfulness must be unvarying. Thus, 'Be truthful' means, 'Speak the truth whatever the consequences, whether the teller or the hearer receives benefit or injury.' And hence, it is inferred, truthfulness implies a quality independent of the organization of the agent or of society." While Mr. Stephen would himself find a place for the "lie of necessity" under conceivable circumstances, he is clear-minded enough to perceive that the moral sense of the civilized world is opposed to this view; and in this he is nearer correct than those who claim the opposite. It is true that those who seek an approbation of their defense of falsehoods which they deem a necessity, assume, without proof, their agreement with the moral sense of the race. But it is also true that there stands opposed to their theory the best moral sense of primitive man, as shown in a wide area of investigation, and also of thinkers all the way up from the lowest moral grade to the most rigorous moralists, including intuitionists, utilitarians, and agnostics. However deficient may be the practice of erring mortals, the ideal standard in theory, is veracity, and not falsehood.