The tyranny of sex

Good night; but go not to my uncle's bed;
Assume a virtue, if you have it not.
That monster, custom, who all severe doth eat
Of habits evil, is angel yet in this,
That to the use of actions fair and good
He likewise gives a frock or livery
That aptly is put on. Refrain tonight;
And that shall lend a kind of easiness
To the next abstinence: the next more easy;
For use almost can change the stamp of nature,
And either master the devil, or throw him out
With wondrous potency . . .