Even today, if a man who was formerly poverty-stricken gets money, he is inclined to utilize his money to perform many philanthropic activities, like opening schools for uneducated men and hospitals for the diseased. In this connection there is an instructive story called punar mūṣiko bhava,"Again Become a Mouse." A mouse was very much harassed by a cat, and therefore the mouse approached a saintly person to request to become a cat. When the mouse became a cat, he was harassed by a dog, and then when he became a dog, he was harassed by a tiger. But when he became a tiger, he stared at the saintly person, and when the saintly person asked him, "What do you want?" the tiger said, "I want to eat you." Then the saintly person cursed him, saying, "May you again become a mouse." A similar thing is going on all over the universe. One is going up and down, sometimes becoming a mouse, sometimes a tiger, and so on. Śrī Caitanya Mahāprabhu said:

The living entities are promoted and degraded by the laws of nature, but if one is very, very fortunate, by association with saintly persons he gets the seed of devotional service, and his life becomes successful. Nārada Muni wanted to bring Nalakūvara and Maṇigrīva to the platform of devotional service through poverty, and thus he cursed them. Such is the mercy of a Vaiṣṇava. Unless one is brought to the Vaiṣṇava platform, one cannot be a good man. Harāv abhaktasya kuto mahad-guṇāḥ (Bhāg. 5.18.12). An avaiṣṇava never becomes a good man, however severely he is punished.