Mundane workers labor very hard day and night in order to relish a certain kind of rasa which is understood as sense gratification. The relish or taste of the mundane rasa does not long endure, and therefore mundane workers are always apt to change their position of enjoyment. A businessman is not satisfied by working the whole week; therefore, wanting a change for the weekend, he goes to a place where he tries to forget his business activities. Then, after the weekend is spent in forgetfulness, he again changes his position and resumes his actual business activities. Material engagement means accepting a particular status for some time and then changing it. This position of changing back and forth is technically known as bhoga-tyāga, which means a position of alternating sense enjoyment and renunciation. A living entity cannot steadily remain either in sense enjoyment or in renunciation. Change is going on perpetually, and we cannot be happy in either state, because of our eternal constitutional position. Sense gratification does not endure for long, and it is therefore called capala-sukha, or flickering happiness. For example, an ordinary family man who works very hard day and night and is successful in giving comforts to the members of his family thereby relishes a kind of mellow, but his whole advancement of material happiness immediately terminates along with his body as soon as his life is over. Death is therefore taken as the representative of God for the atheistic class of men. The devotee realizes the presence of God by devotional service, whereas the atheist realizes the presence of God in the shape of death. At death everything is finished, and one has to begin a new chapter of life in a new situation, perhaps higher or lower than the last one. In any field of activity—political, social, national or international—the result of our actions will be finished with the end of life. That is sure.
Bhakti-rasa, however, the mellow relished in the transcendental loving service of the Lord, does not finish with the end of life. It continues perpetually and is therefore called amṛta, that which does not die but exists eternally. This is confirmed in all Vedic literatures. Bhagavad-gītā says that a little advancement in bhakti-rasa can save the devotee from the greatest danger—that of missing the opportunity for human life. The rasas derived from our feelings in social life, in family life or in the greater family life of altruism, philanthropy, nationalism, socialism, communism, etc., do not guarantee that one's next life will be as a human being.