Friendships in childhood are usually a matter of chance, whereas in adolescence they are most often a matter of choice.

The idea of childhood as a social invention, in retrospect, is hardly credible. In the Bible, in writings of the Greeks and Romans, and in the works of the first great educator of the modern era, Comenius, children were recognized as being both different from adults and different from one another with respect to their stages of development. To be sure, the scientific study of children and the increased length of life in modern times have enhanced our understanding of age differences, but they have always been acknowledged.

Play is not only our creative drive; it's a fundamental mode of learning.

Learning to read and write makes little sense if you don't understand what you're reading and writing about. While we may have forgotten, most of our early learning came not from being explicitly taught but from experiencing. Kids aren't born knowing hard and soft, sweet and sour, red and green. When the child experiences those things, s/he transforms them into psychological understandings. When kids play with other kids, they learn about others and about themselves. Learning the basics of our physical and social reality is what early childhood is all about.

We now recognize that abuse and neglect may be as frequent in nuclear families as love, protection, and commitment are in nonnuclear families.

Children in the 21st (century) have been transformed from net producers of their own toy and play culture, to net consumers of play culture imposed by adults.

Sigmund Freud was once asked to describe the characteristics of maturity, and he replied: lieben un arbeiten ("loving and working"). The mature adult is one who can love and allow himself or herself to be loved and who can work productively, meaningfully, and with satisfaction.