The Spiritual Exercises
Probably the best resource on line for The Spiritual Exercises and anything to do with Ignatian Spirituality can be found at Ignatian Spirituality.com
To read more about the Exercises, go to: http://www.ignatianspirituality.com/ignatian-prayer/the-spiritual-exercises
For a video explaining the Spiritual Exercises, click here.
The First Principle and Foundation is characterized by the virtue of Detachment.