Cicero acclaimed him as `` the perfect orator '' who lacked nothing , and Quintilian extolled him as `` lex orandi '' ( `` the standard of oratory '' ) and that `` inter omnes unus excellat '' ( `` he stands alone among all the orators '' ) . Cicero acclaimed him as `` the perfect orator '' who lacked nothing , and Quintilian extolled him as lex orandi ( `` the standard of oratory '' ) and that inter omnes unus excellat ( `` he stands alone among all the orators '' ) .