As a mental tour de force it is without a mate, it defies alike the simple, the concrete, and the occult." "It seems to be a corker." I blushed for the word, but it was out before I could stop it.
"A what ?" "A--wonderful structure--combination, so to speak, of profound thoughts--unthinkable ones--um--" "It is true.

Read backward, or forward, or perpendicularly, or at any given angle, these four propositions will always be found to agree in statement and proof." "Ah--proof.

Now we are coming at it.

The statements agree; they agree with--with--anyway, they agree; I noticed that; but what is it they prove I mean, in particular ?" "Why, nothing could be clearer.

They prove: "1.