Toute transformation sociale (...) s'est fondée sur de nouvelles bases métaphysiques et idéologiques; ou plutôt, sur des émotions et intuitions plus … - Lewis Mumford

If Leonardo's example of diversification had been more widely followed, the whole tempo of mechanical and scientific development would have been slowed down. This means that the pace of change might have been established in relation to human need, and that valuable parts of man's cultural heritage might have been kept alive, instead of being ruthlessly extirpated in order to widen the empire of the machine. Instead of rapid advances, on the basis of uncoordinated knowledge, in specialized departments, mainly those concerned with war and economic exploitation, there would have been the possibility of a slower but better-coordinated advance that did justice to the processes, functions, and purposes of life.

The city is a fact in nature, like a cave, a run of mackerel or an ant-heap. But it is also a conscious work of art, and it holds within its communal framework many simpler and more personal forms of art. Mind takes form in the city; and in turn, urban forms condition mind.

If the new world exploration did not come to anything like its happy expected fulfillment even in North America, where the odds were more favorable, it was because the new colonizers and settlers brought so much of the Old World in their refined equipment and their brutal customs with them. The wonder is rather that the hopeful dream has remained alive for so long, for some of its original luminosity still dazzles and blinds the eyes of many of our contemporaries who continue to pursue the same archaic fantasies, planning further voyages through outer space. Contemporary 'space age' prophets, who proclaim space exploration as the endless frontier and astronauts as the coming pioneers, throw an unrealistic glamour over both the past, and even more, the future of such efforts.