Time was when biologists somewhat overworked the evidence that these creatures preserve the health of game by killing the physically weak, or that they prey only on " worthless " species.
She ought not to excite my imagination with such displays of heavenly innocence and happiness, nor awaken my heart from its slumbers, in which it dreams of the worthlessness of life!
Everyone has seen speakers beginning a presentation by apologizing for how unworthy they are, how little of their work is really conclusive, how they hope people will forgive them and so on.