If we make the praise or blame of others the rule of our conduct, we shall be distracted by a boundless variety of irreconcilable judgements, be held in perpetual suspense between contrary impulses, and consult for ever without determination.
SAMUEL JOHNSON 1750
It will be very hard to understand how there be some principles which all men do acknowledge and agree in; and yet there are none of those principles which are not, by depraved custom and ill education, blotted out of the minds of many men: which is to say, that all men admit, but yet many men do deny and dissent from them.
Notwithstanding all this boast of first principles and innate light, we shall be as much in the dark and uncertainty as if there were no such thing at all, it being all one to have no rule, and one that will warp any way; or amongst various and contrary rules, not to know which is the right.
JOHN LOCKE 1690