7. The Physical Body Binds Us to the Physical World, the Etheric Body to the Cosmos
Materialists find special corroboration of their materialistic theories in the fact that even geniuses—or at least those who are regarded as such—sometimes become senile in their old age, and Kant is cited as a particularly relished case. But people who subscribe to this way of thinking do not grasp the fact that the soul can manifest here on the physical plane only through the agency of the physical organs. Kant's brain became unable to serve as the tool of the soul forces he had evolved, and this is why he appeared feebleminded in old age, even though the soul that was preparing to organize the physical body of his next incarnation was actually already living in him. But in the previous earth life this soul was unable to make a suitable instrument of the physical body it inhabited.