The mastery of nature is vainly believed to be an adequate substitute for self mastery.

Unless a tree has borne blossoms in spring you will vainly look for fruit on it in autumn.

By mere burial man arrives not at bliss and in the future life throughout its whole infinite range they will seek for happiness as vainly as they sought it here who seek it in aught else than that which so closely surrounds them here - the Infinite.