He was madly in love.

This thriving brutish nature seemed unconscious in everything.

He obeyed his instincts, permitting the will of his organism to lead him.
A year before, he would have burst into laughter, had he been told he would become the slave of a woman, to the point of risking his tranquillity.

The hidden forces of lust that had brought about this result had been secretly proceeding within him, to end by casting him, bound hand and foot, into the arms of Therese.

At this hour, he was in dread lest he should omit to be prudent.