O cunning enemy, that, to catch a saint,
With saints dost bait thy hook! Most dangerous
Is that temptation that doth goad us on
To sin in loving virtue: never could the strumpet,
With all her double vigour, art and nature,
Once stir my temper; but this virtuous maid
Subdues me quite. Even till now,
When men were fond, I smiled and wondered how.
– William Shakespeare
Measure for Measure, Act 2, Scene 2.