For as long as there have been markets, there have been complaints about market motives. For much of this history, the two sides have talked past one another. Optimists about markets have mostly addressed other optimists, and failed to take seriously the kinds of relational values that might be at stake and the range of possible alternatives to market-based production. Pessimists about markets have mostly addressed other pessimists, and failed to take seriously the full range of market-involving economic structures and (...) the different kinds of psychologies compatible with market interactions. Recently, there has been a break-through, on behalf of the optimists. According to the model of exchange as mutual assistance, an exchange can be perceived as a joint activity for mutual benefit - and needn't involve self-directed motives at all. This essay pushes back, on behalf of the market pessimists. The essay develops a contrast between exchange as mutual assistance and an ideal of production as caring solidarity, in which production is a joint activity of caring about one another. This alternative ideal draws on Marxist, socialist, feminist, and Christian traditions, and, in particular, on recent work on care, solidarity, and alienation. These two models – exchange as mutual assistance and production as caring solidarity – share key features, including an emphasis on reasoning from a ‘we-perspective’, on trusting one another, and on resisting a familiar self/other motivational dichotomy. Key differences are developed in detail. The essay concludes by discussing the implications for an economics of caring solidarity, with discussion of the limitations of various market socialist strategies. (shrink)