Authors:

It is not enough to know what is good: you must be able to do it.

George Bernard Shaw (2015). “The Collected Works of George Bernard Shaw: Plays, Novels, Articles, Lectures, Letters and Essays: Pygmalion, Mrs. Warren’s Profession, Candida, Arms and The Man, Man and Superman, Caesar and Cleopatra, Androcles And The Lion, The New York Times Articles on War, Memories of Oscar Wilde and more”, p.3950, e-artnow
It is not enough to know what is good: you must be able to do it.