"The beginning of all evil temptations is inconstancy of mind and insufficient trust in God. Just as a ship without a rudder is tossed about with every storm, so those who are negligent and abandon their good resolutions are tempted in diverse ways. Gold is tried by fire and the upright person by temptation. Often we do not know what we can do until temptation shows us what we are."
Imitation of Christ, Book One, Chapter Thirteen