Faith And Falsehood

Finis, inquit, praecepti est caritas de corde puro, et conscientia bona, et fide non ficta.  Sane finis eorum ficta est, de quibus dicitur: Dilexerunt eum in ore suo, et lingua sua mentiti sunt ei. A qua malitia Joannes Apostolis nos dehortans, Noli, inquit, diligere verbo, nec lingua, sed opere et veritate. Veritas operis est actio rectae intentionis. Veritas in ore est simplicitas in sermone. Sicut autem cor purum non simulat, ita pura intentio non errat. Ubi autem non erat error, aut simulatio, seu fictio, est pura et simplex intentio, et in ea caritas requiescat. Fictio vero fidei longe a caritate est relegata; et dicitur fides ficta eorum, qui de corde suo fingunt suae fidei formam, et sanae doctrinae adversari non dubitant. Ficta etiam a quodam sapiente dicitur quasi fictilis, eo quod tanquam vas fictile et fragile tempore tentationis cito a veritate recedit. Petrus Blenensis, De Caritate Dei Et Promixi, Cap II  Source:  Migne PL 207.898a-b

'The end of the commandment is love from a pure heart, and a good conscience, and a faith that is not false.' 1   And truly their intent is false, concerning whom it is said: 'They loved Him with their mouths and with their tongues they spoke lies to Him.' 2 From which wickedness the Apostle John exhorts us, saying, 'Do not love in speech, or tongue, but in deed and truth.' 3 The truth of the deed is the act rightly intended. Truth in the mouth is simplicity in speech. For as the pure heart does not deceive, so the pure intent does not err. And where there was no error, or simulation, or falsehood, there is pure and simple intent, and in this love has rest. However, a false faith is banished far from love. And it is said that the false faith of those who from their own hearts fashion the form of their faith does not hesitate to fight against sound teaching. And by a certain wise one false faith is said to be like an earthenware vessel, for like a fragile earthenware pot in time of trial it swiftly falls away from the truth. Peter of Blois, On Love Of God and One's Neighbour, Chap 2 1 1 Tim 1.5 2 Ps 77.36 3 1 Jn 3.18