At the beginning of the 20th century a line of reasoning emerged that sought to remove the "fairy tales" from childhood. The rationalists viewed them as harmful to a child, establishing myths and artificial realities when a child needed reality. Fairy tales were relegated to "nonsense" or "lies" and numerous other labels that said they were not suitable for a healthy developing child. They were filled with monsters and awful things...... Author G. K. Chesterton, however, wrote in defence : "Fairy tales do not tell children the dragons exist. Children already know that dragons exist. Fairy tales tell children the dragons can be killed."