Evolutionary process means... If evolution means to go higher, then from mind you come to intelligence. And if you go still higher, then you come to the platform of soul, spirit soul.
Śyāmasundara: He says that the mind plays no part in the process of evolution, because the only evidence for the existence of mental phenomena is a fragment of space and time. But this is not a substance; it is simply a set of relations.
Prabhupāda: He does not know it is also matter, but very subtle matter. It is matter. Just like ether—you cannot touch, you cannot see, but still it is matter. And mind is subtler than the ether. But it is matter. Intelligence is subtler than the mind, but still it is matter. So from Vedic authorities we understand that earth, water, fire, air, ether, mind, intelligence, they are all material.
Dr. Rao: And ahaṅkāra, ego.
Prabhupāda: Ego, that is also matter.
Dr. Rao: That is the ultimate...
Śyāmasundara: So does the mind play any part in the evolutionary process? The mind?
Prabhupāda: Yes. Evolutionary process means... If evolution means to go higher, then from mind you come to intelligence. And if you go still higher, then you come to the platform of soul, spirit soul.