"In the Bhagavad-gītā (2.40) Lord Kṛṣṇa states that God-centered activities are so valuable that just a few of them can save a person from the greatest danger. The greatest danger of life is the danger of gliding down again into the evolutionary cycle of birth and death among the 8,400,000 species. If somehow or other a man misses the spiritual opportunity afforded by his human form of life and falls down again into the evolutionary cycle, he must be considered most unfortunate. Due to his defective senses, a foolish man cannot see that this is happening. Consequently Śrī Īśopaniṣad advises us to exert our energy in the spirit of īśāvāsya (the God-centered conception). Being so engaged, we may wish to live for many, many years; otherwise a long life in itself has no value. A tree lives for hundreds and hundreds of years, but there is no point in living a long time like trees, or breathing like bellows, or begetting children like hogs and dogs, or eating like camels. A humble God-centered life is more valuable than a colossal hoax of a life dedicated to godless altruism or socialism."