Nature has placed mankind under the government of two sovereign masters, pain and pleasure… they govern us in all we do, in all we say, in all we think: every effort we can make to throw off our subjection, will serve but to demonstrate and confirm it. – John Bentham
Ideas are invented only as correctives to the past. Through repeated rectification of this kind one may hope to disengage an idea that is valid. – Gaston Bachelard