It's my firm conclusion that human meaning comes from humans, not from a supernatural source. After we die, our hopes for an afterlife reside in the social networks that we influenced while we were alive. If we influence people in a positive way -- even if our social web is only as big as our nuclear family -- others will want to emulate us and pass on our ideas, manners, and lifestyle to future generations. This is more than enough motivation for me to do good things in my life and teach my children to do the same.