If someone were to pay you ten cents for every kind word you said about people and collect five cents for every unkind word, would you be rich or poor? – Author unknown, quoted by Jacob M. Braude
No habit or quality is more easily acquired than hypocrisy, nor any thing sooner learned than to deny the sentiments of our hearts and the principle we act from: but the seeds of every passion are innate to us, and nobody comes into the world without them. – Bernard Mandeville