Albert Moll, The Sexual Life of the Child
“ Thus, many full-grown men are in need of enlightenment about this matter of sexual potency, and especially need information regarding the extent of the individual variations in this matter. We hear of young men who believe themselves to be ill, simply because they are not sexually potent to a degree that enables them to effect complete sexual intercourse several times in brief succession. Their error often depends upon the fact that they have been told by other young men that normal sexual potency enables a man to have repeated intercourse at intervals of a few minutes. ”
