I'm sure I could interpret a rationalist message from that quote, in the same way that I could derive a reasonable moral system based solely on the Book of Revelations. But that doesn't imply that my reading is intended by the author, or a plausible reading of the text.
Maybe the real issue is that it takes background knoweldge to know what the quote means within Buddhism? Without that background knowledge the sentence doesn't convey much meaning.
Another month has passed and here is a new rationality quotes thread. The usual rules are: