Jonathon Swift
Whoever is out of patience is out of possession of his soul. Men must not turn into bees who kill themselves in stinging others.
John Hardon
Dishonest people are not happy; unchaste people are not happy; angry people, impatient people, lazy people or proud people are not happy.
Marguerite de Angeli
Bonaventure di Fidanza
Beware of becoming vexed or impatient at the faults of others; for it would be folly when you see a man falling into a ditch, to throw yourself into another to no purpose.
Catherine of Sienna
There is no sin or wrong that gives a man a foretaste of hell in this life as anger and impatience.