We humans, once we have become emotionally invested in a homeplace, a prized personal possession, or, especially, in another person, find it immensely difficult to give them up....Because they were made at a time of life when we were utterly dependent on them, the love attachments of infancy have inordinate power over us, more than any other emotional investment.

As he walks away on his own two feet--the toddler's body-mind has reached its moment of perfection. The world is his and he the mighty conqueror of all he beholds.... As long as mother sticks around in the wings, the mighty acrobat confidently performs his trick of twirling in circles, walking on tiptoe, jumping, climbing, staring, naming. He is joyous, filled with his grandeur and wondrous omnipotence.

When a child becomes an adult . . . the elders are fearful. And for good reason . . . not we but they are the germinators of future generations. Will they leave us behind as we did our parents? Consign us to neatly paved retirement villages? Trample us in the dust as they go flying out to their new galaxies? We had better tie them down, flagellate them, isolate them in the family cocoon, . . . indoctrinate them into the tribal laws and make sure they kneel before the power of the elders.

We belong to that order of mammals, the primates, distinguished by its propensity for repeated single litters, intense parental care, long life-spans, late sexual maturity, and a complex and extensive social existence... Our protracted biological and psychological helplessness, which extends well into the third year of life, intensifies the bond between infant and parents, making possible a sense of generational continuity. In contrast to other primates these bonds are not obliterated after sexual maturity.

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.

Young people...have more compassion and tenderness toward the elderly than most middle-aged adults. Nothing--not avarice, not pride, not scrupulousness, not impulsiveness--so disillusions a youth about her parents as the seemingly inhumane way they treat her grandparents.

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.