"Everybody has noticed the way cats stop and loiter in a half-open door. Hasn't everyone said to a cat: "For heaven's sake, why don't you come in?" With opportunity half-open in front of them, there are men who have a similar tendency to remain undecided between two solutions, at the risk of being crushed by fate abruptly closing the opportunity. The overprudent, cats as they are, and because they are cats, sometimes run more danger than the bold." --