"Just as Hillel's actions were not based (even in theory) on any reasoned ethical system, so his moral teaching did not take the form of a systematic treatise, but was expressed in aphorisms, which were, no doubt, occasioned by particular circumstances, but have none the less a universal value. This value, indeed, is not for the doubter, who must needs either find a rational basis for morality, or discard it. They appeal to those who accept, as Hillel accepted, the fundamental postulates of Judaism; and their claim to universality rests, therefore, on the extent to which those postulates are in accord with the root facts of human nature. They are interpretative, not speculative. The moral sayings of Hillel recorded in the Talmud are few in number, but they embody with sufficient fulness the point of view which was expressed no less fully in his conduct. They are contained almost exclusively in the first two chapters of the "Ethics of the Fathers.""