A man who does not possess himself enough to hear disagreeable things without visible marks of anger and change of countenance, or agreeable ones without sudden bursts of joy and expansion of countenance, is at the mercy of every artful knave or pert coxcomb.

Lord Chesterfield (1694-1773) English statesman, wit [Philip Dormer Stanhope]

Letter to his son, #183 (22 May 1749)