Efficacious

Harry lurked behind a low stone wall, feeling at peace with the world and listening to their conversation. “I do thank you for taking the time, Pomona,” Slughorn was saying courteously, “most authorities agree that they are at their most efficacious if picked at twilight.” “Oh, I quite agree,” said Professor Sprout warmly.

He would weep for hours together, and I verily believe that to the very end this spoiled child of life thought his weak tears in some way efficacious.

And one of the most efficacious remedies that a prince can have against conspiracies is not to be hated and despised by the people, for he who conspires against a prince always expects to please them by his removal; but when the conspirator can only look forward to offending them, he will not have the courage to take such a course, for the difficulties that confront a conspirator are infinite.

It is not so we should evince our resignation to the will of heaven; on the contrary, we are all free agents.” “Alas!” exclaimed Mercédès, “if it were so, if I possessed free-will, but without the power to render that will efficacious, it would drive me to despair.” Monte Cristo dropped his head and shrank from the vehemence of her grief.

He tried to resume his former easy, indifferent air, but it was an affectation now, for the rousing had been more efficacious than he would confess.

Science, after having long groped about, now knows that the most fecundating and the most efficacious of fertilizers is human manure.

The complaint of the ghost of Patroclus to Achilles, of but a brief postponement of his own obsequies, shows how efficacious their refusal to the remains of his destroyer must have been in satiating the thirst of revenge, which, even after death, was supposed to torment the dwellers in Hades.