Discretion Proverbs 1:4

There are many more shining qualities in the mind of man, but there is none more useful than discretion; it is this, indeed, which gives a value to all the rest, which sets them at work in their proper times and places, and turns them to the advantage of the person who is possessed of them. Without it, learning is pedantry, and wit impertinence; virtue itself looks like weakness; the best parts only qualify a man to be more sprightly in his errors, and active to his own prejudice. (W. Addison.)