No hawk swooping down upon his prey, no stag improvising new detours by which to trick the huntsman, no dog scenting game from afar is comparable in speed to the celerity of a salesman when he gets wind a deal, to his skill in tripping up or forestalling a rival, and to the art with which he sniffs out and discovers a possible sale.
A murderer is less loathsome to us than a spy. The murderer may have acted on a sudden mad impulse; he may be penitent and amend; but a spy is always a spy, night and day, in bed, at table, as he walks abroad; his vileness pervades every moment of his life
The human heart may find here and there a resting-place short of the highest height of affection, but we seldom stop in the steep, downward slope of hatred.
But also remember: if you have any genuine feelings, hide them like treasure; never let anyone so much as suspect them, or you're lost. Instead of being the executioner, you'll be the victim. And if you ever fall in love, keep that absolutely secret! Never breathe a word until you're completely sure of the person to whom you open your heart. And to protect that love, even before you feel it, learn to despise the world.