From A Chinese Garden of Serenity (1959), by Hung Tzu-ch’eng, translated by Chao Tze-chiang:

A true heart can cause snow to fly in a summer’s day, a fortified city to fall, or a stone to be pierced; but a hypocrite has only his common clay without a spiritual master. When he is with others, his countenance is hideous; and, when alone, his body and his shadow are ashamed of each other.