Roberto Mangabeira Unger

The movement of people and ideas is ... more than useful; it is sacrosanct. It forms part of the process by which the whole human race becomes both one and diverse, and makes itself more godlike, by affirming in the individual as well as in the species, its preeminence over the particular social and cultural worlds that it builds and inhabits. Both the movement of people and the movement of ideas can unsettle and frighten us, driving us back into ourselves. They can also inspire us to reimagine and to remake our interests, our ideals, and even our identities, by beginning to detach them from the settings with which we habitually associate them. Each of them is therefore an invitation to open ourselves to the new, in a world in which every man and woman has a better chance to become the original that he imagines himself to be.

The reader should understand that this book forms a small part of a larger intellectual program: a struggle against fate through thought, an effort to give new meaning and new life to projects of individual and social liberation that for the last two hundred years have shaken and aroused the whole world, a fight to imagine the forms that those projects can and should take if they are to have a future.

[T]wo moments, of trance and struggle, mingle in the real life of societyː an undercurrent of conflict and disbelief always counteracts the routines of dependence and deference. Society, no matter how impregnable it seems to its inhabitants, always stands at the edge of the cliff. The petty practical quarrels and normative disputes, endlessly refought to reproduce a social world in the face of divergent interests and changing circumstance, can escalate at any moment into broader and more intense conflicts that put this world at risk.

Obama shared in the more philosophical part of the discussion as vigorously as he did in the more context-oriented part .... The impression you report, of impatience with speculative exploration, is false. It does justice neither to him nor to me to represent these conversations under the lens of philistine activist against starry-eyed theoretician. He was always interested in ideas, big and small.