It is the soul that decides." "Bosh and nonsense!" he exclaimed impatiently.

"It is the desire that decides.

Here is a man who wants to, say, get drunk.

Also, he doesn't want to get drunk.

What does he do?
How does he do it?
He is a puppet.
He is the creature of his desires, and of the two desires he obeys the strongest one, that is all.