the end and to the means.

_On the contrary,_ Acts are diversified according to their objects.
But the end is a different species of good from the means, which are
a useful good. Therefore the will is not moved to both by the same
act.

_I answer that,_ Since the end is willed in itself, whereas the
means, as such, are only willed for the end, it is evident that the
will can be moved to the end, without being moved to the means;
whereas it cannot be moved to the means, as such, unless it is moved
to the end. Accordingly the will is moved to the end in two ways:
first, to the end absolutely and in itself; secondly, as the reason
for willing the means. Hence it is evident that the will is moved by
one and the same movement, to the end, as the reason for willing the
means; and to the means themselves. But it is another act whereby the
will is moved to the end absolutely. And sometimes this act precedes
the other in time; for example when a man first wills to have health,
and afterwards deliberating by what means to be healed, wills to send
for the doctor to heal him. The same happens in regard to the
intellect: for at first a man understands the principles in
themselves; but afterwards he understands them in the conclusions,
inasmuch as he assents to the conclusions on account of the
principles.

Reply Obj. 1: This argument holds in respect of the will being moved
to the end as the reason for willing the means.

Reply Obj. 2: Whenever color is seen, by the same act the light is
seen; but the light can be seen without the color being seen. In like
manner whenever a man wills the means, by the same act he wills the
end; but not the conversely.

Reply Obj. 3: In the execution of a work, the means are as the middle
space, and the end, as the terminus. Wherefore just as natural
movement sometimes stops in the middle and does not reach the
terminus; so sometimes one is busy with the means, without gaining
the end. But in willing it is the reverse: the will through (willing)
the end comes to will the means; just as the intellect arrives at the
conclusions through the principles which are called "means." Hence it
is that sometimes the intellect understands a mean, and does not
proceed thence to the conclusion. And in like manner the will
sometimes wills the end, and yet does not proceed to will the means.

The solution to the argument in the contrary sense is clear from what
has been said above (A. 2, ad 2). For the usefu