With this special observance, that you o'erstep not the modesty of nature. for anything so overdone is from the purpose of playing, whose end, both at the first and now, was and is, to hold, as 'twere, the mirror up to nature.
William ShakespeareThou hast seen a farmer's dog bark at a beggar? And the creature run from the cur. There thou mightst behold the great image of authority-a dog's obeyed in office.
William Shakespeare