From the sayings of Saint John Cassian about WISDOM

“It is impossible for the mind to remain undisturbed by thoughts, but anyone serious about the matter can certainly permit them entry or drive them away, and although their origin does not lie entirely under our control we can choose to approve of them and to adopt them.”

“True knowledge is found only among those genuinely worshiping God.”

“If you want to correct your brother when he is doing wrong, you must keep yourself calm; otherwise you yourself may catch the sickness you are seeking to cure and you may find that the words of the Gospel now apply to you, ‘Why do you look at the speck of dust in your brother’s eye, and not notice the rafter in your own eye?'”