Let us take a patriot, where we can meet him; and, that we may not flatter ourselves by false appearances, distinguish those marks which are certain, from those which may deceive; for a man may have the external appearance of a patriot, without the constituent qualities; as false coins have often lustre, though they want weight.
Samuel Johnson (1810). “The works of Samuel Johnson, LL.D.: With An essay on his life and genius”, p.143