There is a distinction, but no opposition, between theory and practice; each, to a certain extent, supposes the other: theory is dependent on practice; practice must have preceded theory.
There are two functions of the soul,contemplation and practice,according to the general division of objects, some of which only entertain our speculations, others employ our actions.
The active informations of the intellect filling the passive reception of the will, like form closing with matter, grew actuate into a third and distinct perfection of practice.