Everyone is like a moon, and has a dark side which he never shows to anybody. Mark Twain
There is small risk a general will be regarded with contempt by those he leads, if, whatever he may have to preach, he shows himself best able to perform. Xenophon
Faced with what is right, to leave it undone shows a lack of courage. Confucius
Rippling water shows lack of depth. Indonesian Proverb
Authority shows the man. English Proverb
One doesn't tell a man ‘go away' but one shows him something so he will go. Somali Proverb