Scrupulousness is associated, where it occurs spontaneously, with certain personality-types, and with certain neurotic conditions. A scrupulous person is somewhat difficult to live with. Where it is a cultural constant, and is observed in and by a whole mass of indiscriminate humanity, it is another phenomenon. The Jewish civilization is familar with the double standard. There is the norm, to which everyone should conform: and there are two extremes, that of the Men of Sodom, who are the dogs in the manger, who will never do the righteous thing even if it costs them nothing, and, on the other hand, the ḥasidm, who are scrupulous. The double standard implies that there are persons, and groups who are voluntarily associated, who choose to be more careful than the average, and though their scrupulosity does not impugn the righteousness of the average, it provides some kind of control upon it, and vice versa. Even the average are exhorted in the Mishnah to build a fence about the Law. This is a normative principle of Pharisaic origin, to the effect that one should so conduct oneself as never to place oneself within reach of breaking the negative commandments. This is scrupulosity, and the difference between the average observant Jew and the Hasid is (in this respect) that the Hasid will pursue the principle, if need be, to his own cost. A good example of the Mishnaic principle in general practice was the 39 stripes: a man was flogged 39 times, so as not to infringe the biblical precept of 40 lashes: one kept just within the margin of the Law.