To crush fanaticism and to venerate the infinite, such is the law. Let us not confine ourselves to prostrating ourselves before the tree of creation, and to the contemplation of its branches full of stars. We have a duty to labor over the human soul, to defend the mystery against the miracle, to adore the incomprehensible and reject the absurd, to admit, as an inexplicable fact, only what is necessary, to purify belief, to remove superstitions from above religion; to clear God of caterpillars.