Guest: Is modern science materialism, Prabhupāda? Is it materialism?
Prabhupāda: Yes.
Guest: All, all materialism?
Prabhupāda: Just dealing with earth, water, air, fire, sky. That's all.
Guest: And in this time, modern science, you know, physics, chemistry, mathematics; is this all materialism?
Prabhupāda: All materialism.
Guest: All materialism.
Prabhupāda: They do not know what is spiritual.