Meanings of fierce desires in English

They were all swept with mystery, knowing vague longings or fierce desires.

It was the way of the Wolf to pay no attention to methods, only to achieve his own fierce desires.

In our griefs do we not stand alone, who have in our hearts the fierce desires of love and all the tragedies of despair?

And had it not been one of my dreams of marriage, this preparing for the children's Christmas, remembering the fierce desires of my own childhood?