"Hume's skepticism, therefore, descends in a direct line from Cartesian mathematicism."

“The scientific sterility of the Middle Ages has to be condemned for the same reasons which make it necessary today to condemn the philosophic sterility of scientism.”

“With Descartes the Cogito ergo sum turns into Cogito ergo res sunt .”

“As used today, the word realism means in the first place the opposite to idealism when it claims that it is possible to pass from the subject to the object.”

“Having left us with thought , and extension , does not know how to account for the union of soul and body.”

“Up to Descartes' time, and particularly during the Middle Ages, it had always been agreed that philosophy consisted in a transposition of reality into conceptual terms”

“What, then, will this philosophy be?  Thomas only employed it for the service it renders Christian wisdom.  No doubt this is why he never thought of separating it from this wisdom and giving it a name.  He probably did not foresee that the day would come when people would go through his works to extract the elements of a philosophy from his theology.  He himself never attempted this synthesis.”