there is abundant antecedent in the _Book of
Henoch_ and the _Book of Jubilees_.

+454. Restraint of expression within limits.+ It is the rule of good
breeding everywhere to restrict all bodily functions and to conceal
them, such as gaping, sneezing, coughing, clearing the throat and nose,
and to restrain all exuberant expressions of joy, pain, triumph, regret,
etc., but the limits cannot be defined. They lie in the current practice
of the society in which one lives. They are not rational. At the same
time they are logical. They are correctly deduced from a broad view of
policy. Orientals cover their heads to show respect; Occidentals bare
the head for the same purpose. Each custom has its philosophy of
respect. We think it disrespectful to turn the back on any one.
Orientals generally think it respectful to pretend not to be able to
look another in the face. If ladies are thought to have the right to
decide whether to continue acquaintances or not, they salute first. If
it is thought unbecoming for them to salute first, then men do it. Which
of the great premises is correct it would be impossible to say. The
notion of correctness fails, because it implies the existence of a
standard outside of and above usage, and no such standard exists. There
is an assumed principle which serves as a basis for the usage, and the
usage refers back to the principle, but the two are afloat together.

+455. Violation of rule.+ It results from the study of the cases that
nakedness is never shameful when it is unconscious.[1419] The same is
true of everything under the head of decency. It is consciousness of a
difference between fact and the rule set by the mores which makes
indecency and produces harm, for that difference, if disregarded, is
immorality.

+456. The suspensorium.+ The device known as the suspensorium,
represented by von den Steinen,[1420] is obviously invented solely for
the convenience of males in activity. It is not planned for concealment
and does not conceal. By a development of the device it becomes a case,
made of leaf, wood, bone, clay, shell, leather, bamboo, cloth, gourd,
metal, or reed. It is met with all over the world.[1421] Perhaps its
existence in ancient Egypt is proved.[1422] In almost every case, but
not always, there is great disinclination to remove it, or part with it,
or to be seen without it. The sentiment attaches only to the part which
is covered by the apparatus. To be seen without it would do ha