XVIII. The brethren shall refrain from stirring up

hatred and discord among men. They shall not discourse
of the soul, whether in human beings, animals, or plants,
nor of any other subject which, however natural to them-
selves, may appear miraculous to the common understand-
ing. Such discourse can easily lead to their discovery, as
occurred at Rome in the year 1620. But if the brethren
be alone they may speak of these secret things.