Book I, 1930:
"Is it worth while to speak of Infinity if it is unattainable? But it does exist; and everything great, even if invisible, compels us to think about the ways to it. Thus, even now let us ponder about the ways into Infinity; for it exists, and it is terrifying if it is not cognized. But even in the earthly life one can approach and can temper the spirit toward acceptance of the unfathomable."