8. Consider the strict life others lead who are bound by the rules of the cloister. They seldom go out, live in retirement, eat sparingly, are poorly clothed, work hard, speak little, keep long vigils, rise early, pray much, read often and discipline themselves.
Look how the Carthusians, Cistercians and many other religious men and women rise in the night to sing the Divine Office. Aren't you ashamed, then, of being so lazy and lukewarm?
Book 1: ADMONITIONS FOR A SPIRITUAL LIFE (The Imitation of Christ, Thomas Kempis)