On the same terms, therefore, as art is attained to, is all knowledge and science acquired; for as art is a habit with reference to things to be done, so is science a habit in respect to things to be known; as that proceeds from the imitation of types or forms so this proceeds from the knowledge of natural things.

In: Great Books of the Western World (Volume 28), Anatomical Exercises on the Generation of Animals, Of the Manner and Order of acquiring Knowledge (p. 333), Encyclopedia Britannica, Inc. 1952