"So possible is it for us to roll ourselves up in Wickedness, till we grow invulnerable by Conscience; and that Centinel once doz'd, sleeps fast, not to be awaken'd while the Tide of Pleasure continues to flow, or till something dark and dreadful brings us to ourselves again."
— Defoe, Daniel (1660?-1731)
(p. 82, p. 105 in Penguin)
See The Fortunate Mistress: Or, A History of the Life and Vast Variety of Fortunes of Mademoiselle de Beleau, afterwards call'd the Countess de Wintselsheim, in Germany. Being the Person known by the Name of the Lady Roxana, in the Time of King Charles II (London: Printed for T. Warner, 1724). <Link to ESTC><Link to Google Books>
Reading Daniel Defoe, Roxana, ed. David Blewett (New York: Penguin Books, 1987).