Loss (n.) is only possible of what you have: robbed of his iron lamp, Epictetus told himself that tomorrow he would find an earthenware one.
Loss (n.) is counted only in money, so we notice when a smith ruins his hammer but not when a man loses his shame, dignity and kindness — which, unlike money, are lost only by our own fault.
Loss (n.) is only a question of exchange: a horse for a donkey, a fine deed for a bit of cash, self-respect for a tribune's post — gain the better and you have lost nothing.
Loss (n.) is not only of cash: self-respect and decency can be lost too, and they are the losses you once thought the only real ones.
Loss (n.) is a word for the lender's call: nothing is ever lost, only handed back, and the one who collects it is not your concern.