Prabhupāda: What do you mean by material life? I am sitting on this bed. Is it material or spiritual?
Bob: Material.
Prabhupāda: Then how we give up material life?
Bob: I think how I interpreted it was a desire for material gains.
Prabhupāda: That is material life.
Bob: You're working towards material gains, not giving up all material.
Prabhupāda: Material life means when you desire to gratify your senses, that is material life. And when you desire to serve God, that is spiritual life. That is the difference between material life and spiritual life. Now we are trying to serve our senses. Instead of serving the senses, when we serve God, that is spiritual life. What is the difference between our activities and others' activities? We are using everything: table, chair, bed, this tape recorder, typewriter. So what is the difference? The difference is that we are using everything for Kṛṣṇa.