This process of, I mean to say, converting the material energy to spiritual energy is called bhakti-yoga. Just like this microphone. When it is used for some material purpose . . . just like I am speaking. But sometimes the politicians or other parties or so many things—this microphone can be utilized for so many purposes, and it can be utilized also God's purposes. I am speaking through this microphone about the message of God. So when it is utilized for God's purposes it is spiritual. And when it is utilized for our material purposes of sense gratification, this is material. Just like electricity. Electricity is one energy. It can be utilized for heating purpose and cooling purpose. Similarly, God's energy is one, but when it is utilized for sense gratification, that is called material energy, and when it is used for service of God, then it is called spiritual energy.
So to transfer ourself from material energy to spiritual energy is to begin service of God. Anything engaged in the service of God, that is spiritual. This is a hall. It can be utilized for selling wine and it can be utilized for speaking about God. So the place is the same, but when it is utilized for God's purpose, then it is spiritual, and it is utilized for my sense gratification, that is material. That requires little guidance. Īśāvāsyam idaṁ sarvam (ISO 1). Everything belongs to God, but it becomes material and spiritual according to the purpose it is being utilized. So if you convert your life, everything for God—speaking for God, eating for God, sleeping for God, mating for God—then it is spiritualized. We have got four kinds of engagements: eating, sleeping, mating and defending. Defending for God also. So actually, everything belongs to God. Now we have to learn it, how to utilize it for God. That is our philosophy.