As to how they convey it from man to man the greatest probability is in favour of the flea as an intermediary.
The binding force of moral rules becomes evanescent if we admit, with Hutcheson, that the " sense " of them may properly vary from man to man as the palate does; and it seems only another way of putting Hume's doctrine, that reason is not concerned with the ends of action, to say that the mere existence of a moral sentiment is in itself no reason for obeying it.
All the spaceships, computers, and weapons within the Five Galaxies were made from ore from Anshan mines-- even the swords, the only weapons sanctioned by the Planetary Council as fair and appropriate for man-to-man combat.
man-to-man combat between challengers for the favors of a woman usually ended in the symbolic death of an opponent.
man-to-man fighting and eventually captured the German trenches.