People who take the risk make a tremendous discovery: The more things you care about, and the more intensely you care, the more alive you are. This capacity for caring can illuminate any relationship: marriage, family, friendships-even the ties of affection that often join humans and animals. Each of us is born with some of it, but whether we let it expand or diminish is largely up to us. To care, you have to surrender the armor of indifference. You have to be willing to act, to make the first move.