24. (3) The soul contains the reasons of all things. The soul operates
according to these reasons, whether incited to activity by some
exterior object, or whether the soul be turned towards these reasons
by folding back on herself. When the soul is incited to this activity
by some exterior object, she applies her senses thereto; when she
folds back on herself, she applies herself to thoughts. It might be
objected that the result is that there is neither sensation nor thought
without imagination; for just as in the animal part, no sensation
occurs without an impression produced on the organs of sense; likewise
there is no thought without imagination. Certainly, an analogy obtains
between both cases. Just as the sense-image (type) results from the
impression experienced by sensation, likewise the intellectual image
(phantasm) results from thought.