The caretaking has to be done. "Somebody's got to be the mommy." Individually, we underestimate this need, and as a society we make inadequate provision for it. Women take up the slack, making the need invisible as we step in to fill it.

In many ways, constancy is an illusion. After all, our ancestors were immigrants, many of them moving on every few years; today we are migrants in time. Unless teachers can hold up a model of lifelong learning and adaptation, graduates are likely to find themselves trapped into obsolescence as the world changes around them. Of any stopping place in life, it is good to ask whether it will be a good place from which to go on as well as a good place to remain.

Most higher education is devoted to affirming the traditions and origins of an existing elite and transmitting them to new members.

Monotony and repetition are characteristic of many parts of life, but these do not become sources of conscious discomfort until novelty and entertainment are built up as positive experiences.

Jazz exemplifies artistic activity that is at once individual and communal, performance that is both repetitive and innovative, each participant sometimes providing background support and sometimes flying free.

Fear is not a good teacher. The lessons of fear are quickly forgotten.

Orthodox Judaism is a thicket of detailed injunctions, Biblical commandments elaborated during centuries of prohibited proselytizing, functioning to limit interaction with outsiders. At the opposite extreme, Islam, still the most rapidly expanding of faiths, demands little immediate knowledge from those who would convert. The convert is permitted to enter and then to learn by participation, although there are plenty of detailed regulations and abstruse theological ideas to be pursued later, and the regulations do effectively separate believers from nonbelievers.