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Make friends with the angels, who though invisible are always with you. Often invoke them, constantly praise them, and make good use of their help and assistance in all your temporal and spiritual affairs.

"Introduction to the Devout Life". Book by Francis de Sales, Pt. 2, ch. 16, 1609.
Make friends with the angels, who though invisible are always with you. Often invoke them, constantly praise them, and make good use of their help and assistance in all your temporal and spiritual affairs.