Dante on Fraud and Traitors

"Now fraud, that eats away at every conscience, is practiced by a man against another who trusts in him, or one who has no trust. This latter way seems only to cut off the bond of love that nature forges...But in the former way of fraud, not only the love that nature forges is forgotten, but added love that builds a special trust;

thus, in the tightest circle, where there is the universe's center, seat of Dis, all traitors are consumed eternally."

Dante, The Divine Comedy, Inferno, Canto XI.