What would it be like to have not only color vision but culture vision, the ability to see the multiple worlds of others.

Improvisation can be either a last resort or an established way of evoking creativity.

Rarely is it possible to study all of the instructions to a game before beginning to play, or to memorize the manual before turning on the computer. The excitement of improvisation lies not only in the risk of being involved but in the new ideas, as heady as the adrenaline of performance, that seems to come from nowhere.

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.

Caring can be learned by all human beings, can be worked into the design of every life, meeting an individual need as well as a pervasive need in society.

The human species thinks in metaphors and learns through stories.

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.