Thus, the technique of metropolitan life is unimaginable without the most punctual integration of all activities and mutual relations into a stable and impersonal time schedule.

Man's nature, originally good and common to all, should develop unhampered.

Every superior personality, and every superior performance, has, for the average of mankind, something mysterious.

Every relationship between two individuals or two groups will be characterized by the ratio of secrecy that is involved in it.

Cities are, first of all, seats of the highest economic division of labor.

For the division of labor demands from the individual an ever more one-sided accomplishment, and the greatest advance in a one-sided pursuit only too frequently means dearth to the personality of the individual.

Secrecy involves a tension which, at the moment of revelation, finds its release.