For a kid, self-esteem can be as close at hand as a sports victory or a sense of belonging in a peer group. It's a much more complicated and elusive proposition for adults, subject to the responsibilities and vicissitudes of grown-up life.

What mortal claims, by searching to the utmost limit, to have found out the nature of God, or of his opposite, or of that which comes between, seeing as he doth this world of man tossed to and fro by waves of contradiction and strange vicissitudes?