"Among one’s human incarnations there is invariably found an incarnation devoted to rhythmic labor. Whether this be some sort of craftsmanship or music, singing or farm work, every man infallibly will cultivate in himself the rhythm which fills all of life. Upon learning of certain incarnations, people frequently are astonished as to why they should have been so insignificant. But in them there was being worked out the rhythm of labor. One of the greatest of qualities, this must be acquired through conflict and patience. 49."