This heterogeneity is even so complete that it frequently degenerates into a veritable antagonism. The two worlds are not only conceived of as separate, but as even hostile and jealous rivals of each other. Since men cannot fully belong to one except on condition of leaving the other completely, they are exhorted to withdraw themselves completely from the profane world, in order to lead an exclusively religious life. Hence comes the monasticism which is artificially organized outside of and apart from the natural environment in which the ordinary man leads the life of this world, in a different one, closed to the first, and nearly its contrary. Hence comes the mystic asceticism whose object is to root out from man all the attachment for the profane world that remains in him. From that come all the forms of religious suicide, the logical working-out of this asceticism; for the only manner of fully escaping the profane life is, after all, to forsake all life. The opposition of these two classes manifests itself outwardly with a visible sign by which we can easily recognize this very special classification, wherever it exists. Since the idea of the sacred is always and everywhere separated from the idea of the profane in the thought of men, and since we picture a sort of logical chasm between the two, the mind irresistibly refuses to allow the two corresponding things to be confounded, or even to be merely put in contact with each other; for such a promiscuity, or even too direct a contiguity, would contradict too violently the dissociation of these ideas in the mind. The sacred thing is _par excellence_ that which the profane should not touch, and cannot touch with impunity. To be sure, this interdiction cannot go so far as to make all communication between the two worlds impossible; for if the profane could in no way enter into relations with the sacred, this latter could be good for nothing. But, in addition to the fact that this establishment of relations is always a delicate operation in itself, demanding great precautions and a more or less complicated initiation,[71] it is quite impossible, unless the profane is to lose its specific characteristics and become sacred after a fashion and to a certain degree itself. The two classes cannot even approach each other and keep their own nature at the same time.