Secrecy is thus, so to speak, a transition stadium between being and not-being.

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

The first internal relation that is essential to a secret society is the reciprocal confidence of its members.

In the latter case life rests upon a thousand presuppositions which the individual can never trace back to their origins, and verify; but which he must accept upon faith and belief.

The psychological basis of the metropolitan type of individuality consists in the intensification of nervous stimulation which results from the swift and uninterrupted change of outer and inner stimuli.