No one can step twice into the same river, nor touch mortal substance twice in the same condition. By the speed of its change, it scatters and gathers again.
HeraclitusAll things flow, nothing abides. You cannot step into the same river twice, for the waters are continually flowing on. Nothing is permanent except change.
HeraclitusIf one does not expect the unexpected, one will not find it out, since it is not to be searched out, and difficut to compass.
Heraclitus