Epictetus. (c.A.D. 50c.A.D. 138). The Golden Sayings of Epictetus.
The Harvard Classics. 190914.
In general, any methods of discipline applied to the body which tend to modify its desires or repulsions, are goodfor ascetic ends. But if done for display, they betray at once a man who keeps an eye on outward show; who has an ulterior purpose, and is looking for spectators to shout, Oh what a great man! This is why Apollonius so well said: If you are bent upon a little private discipline, wait till you are choking with heat some daythen take a mouthful of cold water, an spit it out again, and tell no man!