Thomas Aquinas varied but little from him in positing three requisites for beauty: integrity or perfection, due proportion, and clearness; following Aristotle, he distinguished the beautiful from the good, defining the first as that which pleases in the mere contemplation of it (_pulcrum ... id cujus ipsa apprehensio placet_); he referred to the beauty that even base things possess if well imitated, and applied the doctrine of imitation to the beauty of the Second Person of the Trinity (_in quantum est imago expressa Patris_).[2] If it were wished to discover references to the hedonistic conception of art, it would be possible to do this, with a little goodwill, in some of the sayings of jongleurs and troubadours. Æsthetic rigorism, the total negation of art for religion or for divine and human science, shows itself in Tertullian and among certain Fathers of the Church, at the entrance to the Middle Ages; at their conclusion, in a certain crude scholastic spirit, for example in Cecco d' Ascoli, who proclaimed against Dante: "I leave trifles behind me and return to the _true_; fables are always unpleasing to me," and later, in the reactionary Savonarola. But the narcotic theory of pedagogic or moralistic art prevailed over every other. It had contributed to send to sleep the æsthetic doubts and inquiries of the ancients, and was well suited to a period of relative decadence of culture. This was all the more the case, seeing that it accorded well with the moral and religious ideas of the Middle Ages, and afforded a justification not only for the new art of Christian inspiration, but also for the surviving works of classical and pagan art. [Sidenote: _The pedagogic theory of art in the Middle Ages._]