Imitation of Christ

Non est credendum omni verbo nec instinctui sed caute et longanimiter, res est fecundum Deum ponderanda. Proh dolor sæpe malum facilius quam bonum de alio creditur et dicitur ita infirmi sumus. Sed perfecti viri non facile credunt omni enarrant, quia sciunt humanam fragilitatem imo infirmitatem ad malum proclivem et in verbis fatis labilem. 

We must not trust every word of others or feeling within ourselves, but cautiously and patiently try the matter, whether it be of God. Unhappily we are so weak that we find it easier to believe and speak evil of others, rather than good. But they that are perfect, do not give ready heed to every news-bearer, for they know man's weakness that it is prone to evil and unstable in words.

Imitation of Christ, I, 4:1