"“My Son, pay diligent heed to the motions of Nature and of Grace, because they move in a very contrary and subtle manner, and are hardly distinguished save by a spiritual and inwardly enlightened man. All men indeed seek good, and make pretence of something good in all that they say or do; and thus under the appearance of good many are deceived."
January 1, 1970
https://en.wikiquote.org/wiki/Thomas_%C3%A0_Kempis