Many, however, slide into the very opposite kind of excess, and unconsciously to themselves, in their over-preciseness, laboriously thwart their own design; they let their soul fall down the other side from the heights of Divine elevation to the level of dull thoughts and occupations, where their minds are so bent upon regulations which merely affect the body, that they can no longer walk in their heavenly freedom and gaze above; their only inclination is to this tormenting and afflicting of the flesh. It would be well, then, to give this also careful thought, so as to be equally on our guard against either over-amount, neither stifling the mind beneath the wound of the flesh, nor, on the other hand, by gratuitously inflicted weakenings sapping and lowering the powers, so that it can have no thought but of the body’s pain; and let everyone remember that wise precept, which warns us from turning to the right hand or to the left.
—Saint Gregory of Nyssa, On Virginity