Suddenly the slim form went limp. The man eased her to the earth, and touched her brow lightly. "Dead!" he muttered. Slowly he rose, mechanically wiping his hands upon his cloak. A dark scowl had settled on his somber brow. Yet he made no wild, reckless vow, swore no oath by saints or devils. "Men shall die for this," he said coldly.
That's a great one. I also like Kane's reply when he's addressed by the treacherous John Redly in a tavern.
"I say," said he in a low powerful voice, "that you have this day done a damnable deed. Yon necromancer was worthy of death, belike, but he trusted you, naming you his one friend, and you betrayed him for a few filthy coins. Methinks you will meet him in Hell, some day."