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"Happy he that knows Thee, even if he knows nothing else," says St. Augustine. If we knew all the sciences and knew not how to love Jesus Christ, our knowledge shall profit us nothing to eternal life. But if we know how to love Jesus Christ, we shall know all things, and shall be happy for eternity.

St Alphonsus Liguori (2009). “Dignity and Duties of the Priest Or Selva”, p.291, St Athanasius Press
Happy he that knows Thee, even if he knows nothing else, says St. Augustine. If we knew all the sciences and knew not how to love Jesus Christ, our knowledge shall profit us nothing to eternal life. But if we know how