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Whom conscience, ne'er asleep, Wounds with incessant strokes, not loud, but deep.

Michel de Montaigne (1850). “Works, Comprising His Essays, Letters, and Journey Through Germany and Italy: With Notes from All the Commentators, Biographical and Bibliographical Notices &c., &c”, p.193
Whom conscience, ne'er asleep, Wounds with incessant strokes, not loud, but deep.