The qualities of śānta-rasa are present in all kinds of devotees, whether they are in the dāsya-rasa, sakhya-rasa, vātsalya-rasa or madhura-rasa. The example of sound is given herein. Sound not only exists in the sky, or ether, but it is also present in air, fire, water and earth. This is a scientific explanation of devotional service. just as sound is present in all material elements, śānta-rasa is present in all devotees, whether they are on the platform of dāsya-rasa, sakhya-rasa, vātsalya-rasa or madhura-rasa.