1. 1. R. G. Collingwood, and Jan Dussen , The Idea of History , (Oxford: Clarendon Press, 1993 ), 42 -43 .
2. 2. Cf.A. Momigliano , The Classical Foundations of Modern Historiography (Berkeley: University of California Press, 1990 ), 29 -53 .
3. 4. SeeG. W. Bowersock , Greek Sophists in the Roman Empire (Oxford: Clarendon Press, 1969 ), 1 .