Letter 56 — On Quiet and Study (§10)

“And so with luxury, also, which sometimes seems to have departed, and then when we have made a profession of frugality, begins to fret us and, amid our economies, seeks the pleasures which we have merely left but not condemned. Indeed, the more stealthily it comes, the greater is its force. For all unconcealed vices are less serious; a disease also is farther on the road to being cured when it breaks forth from concealment and manifests its power. So with greed, ambition, and the other evils of the mind,—you may be sure that they do most harm when they are hidden behind a pretence of soundness.”