The Romans never added a single principle to the philosophy which the Greeks elaborated; the ingenious scholastics of the Middle Ages merely reproduced Greek ideas; and even the profound and patient Germans have gone round in the same circles that Plato and Aristotle marked out more than two thousand years ago.

In original genius he was surpassed by no scholastic in the Middle Ages, although both Abélard and Thomas Aquinas enjoyed a greater fame.

Abélard was not acquainted with the Greek, but in a Latin translation from the Arabic he had studied Aristotle, whom he regarded as the great master of dialectics, although not making use of his method, as did the great Scholastics of the succeeding century.