Some faults grow up without any natural occasion giving birth to them, but simply from the free choice of a corrupt and evil will, as envy and this v… - John Cassian

Let me pass over those secret and hidden dispensations of God which each holy person’s mind sees operative in a special way within itself at given moments;
over that heavenly inpouring of spiritual gladness by which the downcast mind is uplifted by an inspired joy;
over those fiery ecstasies of heart and the joyful consolations at once unspeakable and unheard of, by which those who occasionally fall into a listless torpor are raised as out of the deepest sleep to the most fervent prayer.

This prayer, then, although it seems to contain the utter fullness of perfection inasmuch as it was instituted and established on the authority of the Lord himself, nonetheless raises his familiars to that condition which we characterized previously as more sublime. It leads them by a higher stage to that fiery and, indeed, more properly speaking, wordless prayer which is known and experienced by very few. This transcends all human understanding and is distinguished not, I would say, by a sound of the voice or a movement of the tongue or a pronunciation of words. Rather, the mind is aware of it when it is illuminated by an infusion of heavenly light from it, and not by narrow human words, and once the understanding has been suspended it gushes forth as from a most abundant fountain and speaks ineffably to God, producing more in that very brief moment than the self-conscious mind is able to articulate easily or to reflect upon. Our Lord himself represented this condition in similar fashion in the form of those prayers that he is described as having poured out alone on the mountain and silently, and when he prayed in his agony he even shed drops of blood as an inimitable example of his intense purpose.

Sometimes when we have been overcome by pride or impatience, and we want to improve our rough and bearish manners, we complain that we require solitude, as if we should find the virtue of patience there where nobody provokes us: and we apologize for our carelessness, and say that the reason of our disturbance does not spring from our own impatience, but from the fault of our brethren. And while we lay the blame of our fault on others, we shall never be able to reach the goal of patience and perfection. The chief part then of our improvement and peace of mind must not be made to depend on another's will, which cannot possibly be subject to our authority, but it lies rather in our own control. And so the fact that we are not angry ought not to result from another's perfection, but from our own virtue, which is acquired, not by somebody else's patience, but by our own long-suffering.