Paradoxically, the toddler's "No" is also a preliminary to his saying yes. It is a sign that he is getting ready to convert his mother's restrictions and prohibitions into the rules for behavior that will belong to him.

Other people--grandparents, sisters and brothers, the mother's best friend, the next-door neighbor--get to be familiar to the baby. If the mother communicates her trust in these people, the baby will regard them as delicious novelties. Anybody the mother trusts whom the baby sees often enough partakes a bit of the presence of the mother.

Adolescents are the bearers of cultural renewal, those cycles of generation and regeneration that link our limited individual destinies with the destiny of the species.

It didn't take elaborate experiments to deduce that an infant would die from want of food. But it took centuries to figure out that infants can and do perish from want of love.

Normally an infant learns to use his mother as a "beacon of orientation" during the first five months of life. The mother's presence is like a fixed light that gives the child the security to move out safely to explore the world and then return safely to harbor.

Fathers represent another way of looking at life - the possibility of an alternative dialogue.

We humans undergo two major growth spurts: one during infancy and another from eleven to twelve until fifteen or sixteen--pubescence. Between the two is a relatively quiescent growth period in which most of the body takes a rest from growing while the brain continues to mature. This period of life is general referred to as childhood or, sometimes, latency.