If you neglect to instruct [children] in the way of holiness, will the devil [and the world and their own nature] neglect to instruct them in the way of wickedness? No; if you will not teach them to pray, he will to curse, swear, and lie. If ground be uncultivated, weeds will spring.

—John Flavel
The Whole Works of the Reverend John Flavel, vol. 4 (London: W. Baynes and Son, 1820), 374.