"These three glorious virtues – patience, courage, and perseverance – are rooted in true charity and have their place at the very top of that tree of charity which in turn is crowned with the light of most holy faith by which souls run without darkness along the way of truth." Source: St. Catherine [...]
"The virtues of Our Lord are not acquired all at once. Their practice costs. Devote yourselves to them without fear, with courage and perseverance. They must be your adornment on the day on which He will present you to His Father for the celebration of the heavenly nuptials in Paradise in presence of His angels." [...]
"There are two goals, vice and virtue, and both require perseverance. If you would reach life, you must persevere in virtue, and if you would reach eternal death, persevere in vice." Source: St. Catherine of Siena, The Dialogue, Paulist Press, 1980 The Dialogue was dictated by Catherine over a period of five days. Three [...]
"Meditation gives birth to perseverance, and perseverance ends in perception, and what is accomplished with perception cannot be easily rooted out." Source: St. John Climacus, The Ladder of Divine Ascent