Better than angels void of will.
We may, indeed, say that man is obliged to virtue (as a moral
strength). For although the power (facultas) to overcome all
imposing sensible impulses by virtue of his freedom can and must be
presupposed, yet this power regarded as strength (robur) is
something that must be acquired by the moral spring (the idea of the
law) being elevated by contemplation of the dignity of the pure law of
reason in us, and at the same time also by exercise.
{INTRODUCTION ^paragraph 105}