Many biologists have said that animals have no mind, but it is only a difference of words. Mind is merely a vehicle of intelligence. It is intelligence which has manifested as matter, and it is the same intelligence which gradually develops through different aspects into a clearer and purer intelligence. Therefore the lower creatures may not have that mind which a scientist perhaps sees in man; nevertheless we find a vehicle of intelligence in all, and not only in animals and birds, but even in substance we can find intelligence.