The expression “act locally, think globally” (detail versus totality) does not announce a predetermined dual obligation, but a proliferation without limits, which is now common knowledge, you find it in the glass walls of our biggest cities and in the ruins of the most neglected villages. This remarkable injunction pushes us to think not in the world, which would have brought back the idea of conquest and domination, but with the world — in terms of relationships and equivalences (of difference). The local is essential.