it had been sanctified by being offered to an idol; and would kill their daughters rather than endure the disgrace of having unmarried girls at home beyond twelve or thirteen years of age."[60] In the last case the rule of obligation and duty is set by the mores. The interest comes under vanity. The sanction of the caste rules is in a boycott by all members of the caste. The rules are often very harmful. "The authority of caste rests partly on written laws, partly on legendary fables or narratives, partly on the injunctions of instructors and priests, partly on custom and usage, and partly on the caprice and convenience of its votaries."[61] The harm of caste rules is so great that of late they have been broken in some cases, especially in regard to travel over sea, which is a great advantage to Hindoos.[62] The Hindoo folkways in regard to widows and child marriages must also be recognized as socially harmful. +30. How "true" and "right" are found.+ If a savage puts his hand too near the fire, he suffers pain and draws it back. He knows nothing of the laws of the radiation of heat, but his instinctive action conforms to that law as if he did know it. If he wants to catch an animal for food, he must study its habits and prepare a device adjusted to those habits. If it fails, he must try again, until his observation is "true" and his device is "right." All the practical and direct element in the folkways seems to be due to common sense, natural reason, intuition, or some other original mental endowment. It seems rational (or rationalistic) and utilitarian. Often in the mythologies this ultimate rational element was ascribed to the teaching of a god or a culture hero. In modern mythology it is accounted for as "natural." Although the ways adopted must always be really "true" and "right" in relation to facts, for otherwise they could not answer their purpose, such is not the primitive notion of true and right.