‘Everything is in flux’, he said; and ‘You cannot step twice into the same river.’ Disillusioned, he argued against the belief that the existing social order would remain for ever: ‘We must not act like children reared with the narrow outlook “As it has been handed down to us”.’ This emphasis on change, and especially on change in social life, is an important characteristic not only of Heraclitus’ philosophy but of historicism in general. That things, and even kings, change, is a truth which needs to be impressed especially upon those who take their social environment for granted.
