In the plastic arts these symbols have steadily degenerated. Fra Angelico’s angels carry in their face and gesture the peace and authority of Heaven. Later come the chubby infantile nudes of Raphael; finally the soft, slim, girlish, and consolatory angels of nineteenth century art, shapes so feminine that they avoid being voluptuous only by their total insipidity — the frigid houris of a teatable paradise. They are a pernicious symbol. In Scripture the visitation of an angel is always alarming; it has to begin by saying “Fear not.” The Victorian angel looks as if it were going to say, “There, there.”

C. S. Lewis (1898-1963) English writer, literary scholar, lay theologian [Clive Staples Lewis]

The Screwtape Letters, Preface (1961 ed.)
    (Source)