This masterly study has a grand sweep. It ranges over centuries, with a long look backward over several millennia. Yet the history it unfolds is primarily the story of individuals: thinkers and dreamers who envisaged an ideal social order and described it persuasively, leaving a mark on their own and later times.

The roster of utopians includes men of all stripes in different countries and eras--figures as disparate as More and Fourier, the Marquis de Sade and Edward Bellamy, Rousseau and Marx. Fascinating character studies of the major figures are among the delights of the...