Religious illusion must bow to scientific truth. It is in total error about the nature of the true world. Only science is not an illusion.

Dreams are constructed from the residue of yesterday.

Religious ideas have sprung from the same need as all the other achievements of culture: from the necessity for defending itself against the crushing supremacy of nature.

Whatever fosters the growth of civilization works at the same time against war.

Man has, as it were, become a kind of prosthetic God. When he puts on all his auxiliary organs, he is truly magnificent; but those organs have not grown on him and they still give him much trouble at times.

Once again, only religion can answer the question of the purpose of life. One can hardly be wrong in concluding that the idea of life having a purpose stands and falls with the religious system.

Religion is the process of unconscious wish fulfillment, where, for certain people, if the process did not take place it would put them in self-danger of coming to mental harm, being unable to cope with the idea of a godless, purposeless life.