Letters from a Stoic 51 : 6

We too have a war to wage, a type of warfare in which there is allowed no rest or furlough. To be conquered, in the first place, are pleasures, which, as you see, have carried off even the sternest characters. If a man has once understood how great is the task which he has entered upon, he will see that there must be no dainty or effeminate conduct. What have I to do with those hot baths or with the sweating-room where they shut in the dry steam which is to drain your strength? Perspiration should flow only after toil.