“Because,” said the old man, “the natural repugnance to the commission of such a crime prevented you from thinking of it; and so it ever is because in simple and allowable things our natural instincts keep us from deviating from the strict line of duty. The tiger, whose nature teaches him to delight in shedding blood, needs but the sense of smell to show him when his prey is within his reach, and by following this instinct he is enabled to measure the leap necessary to permit him to spring on his victim; but man, on the contrary, loathes the idea of blood⁠—it is not alone that the laws of social life inspire him with a shrinking dread of taking life; his natural construction and physiological formation⁠—”

Dantès was confused and silent at this explanation of the thoughts which had unconsciously been working in his mind, or rather soul; for there are two distinct sorts of ideas, those that proceed from the head and those that emanate from the heart.