501.
Mortal Souls.—Where knowledge is concerned perhaps the most useful conquest that has ever been made is the abandonment of the belief in the immortality of the soul. Humanity is henceforth at liberty to wait: men need no longer be in a hurry to swallow badly-tested ideas as they had to do in former times. For in those times the salvation of this poor “immortal soul” depended upon the extent of the knowledge which could be acquired in the course of a short existence: decisions had to be reached from one day to another, and “knowledge” was a matter of dreadful importance!
Now we have acquired good courage for errors, experiments, and the provisional acceptance of ideas—all this is not so very important!—and for this very reason individuals and whole races may now face tasks so vast in extent that in former years they would have looked like madness, and defiance of [pg 350] heaven and hell. Now we have the right to experiment upon ourselves! Yes, men have the right to do so! the greatest sacrifices have not yet been offered up to knowledge—nay, in earlier periods it would have been sacrilege, and a sacrifice of our eternal salvation, even to surmise such ideas as now precede our actions.