Before the rainfall, the whole surface of the globe becomes almost depleted of all kinds of energies and appears very lean. After the rainfall, the whole surface of the earth becomes green with vegetation and appears to be very healthy and strong. Here a comparison is made to the person undergoing austerities for fulfillment of a material desire. The flourishing condition of the earth after the rainy season is compared to the fulfillment of material desires. Sometimes, when a country is subjugated by an undesirable government, persons and parties undergo severe penances and austerities to get control of the government, and when they attain control, they flourish by giving themselves generous salaries. This temporary profit is like the flourishing of the earth in the rainy season. Actually, one should undergo severe austerities and penances only to achieve spiritual happiness. In Śrīmad-Bhāgavatam it is recommended that tapasya, or austerity, should be accepted for realizing the Supreme Lord. By accepting austerity in devotional service, one regains his spiritual life, and as soon as one regains his spiritual life, he enjoys unlimited spiritual bliss. But if someone undertakes austerities and penances for some material gain, it is stated in the Bhagavad-gītā that the results are temporary and that they are desired by persons of less intelligence.
During the rainy season, in the evening there are many glowworms visible about the tops of trees, hither and thither, and they glitter just like lights. But the luminaries of the sky—the stars and the moon—are not visible. Similarly, in the Age of Kali, persons who are atheists or miscreants become very prominently visible, whereas persons who are actually following the Vedic principles for spiritual emancipation are practically obscured. This age, Kali-yuga, is compared to the cloudy season of the living entities. In this age, real knowledge is covered by the influence of the material advancement of civilization. The cheap mental speculators, atheists and manufacturers of so-called religious principles become prominent like the glowworms, whereas persons strictly following the Vedic principles or scriptural injunctions become covered by the clouds of this age. People should learn to take advantage of the actual luminaries of the sky—the sun, moon and stars—instead of the glowworms' light. Actually, the glowworms cannot give any light in the darkness of night. As clouds sometimes clear, even in the rainy season, and sometimes the moon, stars and sun become visible, so even in this Kali-yuga there are sometimes advantages. For example, sometimes Lord Caitanya's Vedic movement of distributing the chanting of the Hare Kṛṣṇa mantra is heard. People seriously eager to find real light should take advantage of this movement instead of looking toward the light of mental speculators and atheists.