AC 9473 - internal good (read slow); AC 9474 - the will & understanding

AC 9473 [2 - 3] 
Each and all things that come forth are like cause and effect.
No effect can come forth without an efficient cause.
The efficient cause is the internal of the effect,
and the effect is its external.
They are also like endeavor and motion.
No motion can come forth without endeavor,
insomuch that when the endeavor ceases the motion ceases.
Wherefore the internal of motion is endeavor, or moving force.
The case is similar with living endeavor, which is will;
and with living motion, which is action.
No action can come forth without will,
insomuch that when will ceases action ceases;
and therefore the internal of action is will.
From all this it is evident
that in each and all things there must be an internal,
in order that they may come forth,
and that they may afterward subsist;
and that without an internal they are not anything. 

So also it is with the good which is of love;
unless there is an internal good in it, it is not good.
The internal good in the good of faith
is the good of charity,
which is spiritual good;
but the internal good in the good of charity
is the good of mutual love,
which is external celestial good;
and the internal good in the good of mutual love
is the good of love to the Lord,
which is the good of innocence;
and this good is internal celestial good.
But the internal good in the good of love to the Lord,
that is, in the good of innocence,
is the good Divine itself
that proceeds from the Divine Human of the Lord,
and consequently it is the Lord Himself.
This last good must be in all good,
in order that it may be good;
and therefore there is not any good
unless its internal is from this source;
for unless its internal is from this source,
it is not good but evil,
because it is from the person himself,
and that which proceeds from a person is evil;
for a person regards himself in all the good that he does,
and also regards the world,
and thus not the Lord nor heaven.

AC 9474
The will can make itself clear only through the understanding,
for the understanding receives the good of the will,
and good to the will.