And Milton says, "They have no such thing as spiritual food; they are only swollen with wind." At first you may think that is a coarse type, and an obscure one. But again, it is a quite literally accurate one. Take up your Latin and Greek dictionaries, and find out the meaning of "Spirit." It is only a contraction of the Latin word "breath," and an indistinct translation of the Greek word for "wind." The same word is used in writing, "The wind bloweth where it listeth"; and in writing, "So is every one that is born of the Spirit"; born of the _breath_, that is; for it means the breath of God, in soul and body. We have the true sense of it in our words "inspiration" and "expire." Now, there are two kinds of breath with which the flock may be filled; God's breath, and man's. The breath of God is health, and life, and peace to them, as the air of heaven is to the flocks on the hills; but man's breath--the word which _he_ calls spiritual,--is disease and contagion to them, as the fog of the fen. They rot inwardly with it; they are puffed up by it, as a dead body by the vapors of its own decomposition. This is literally true of all false religious teaching; the first and last, and fatalest sign of it is that "puffing up." Your converted children, who teach their parents; your converted convicts, who teach honest men; your converted dunces, who, having lived in cretinous stupefaction half their lives, suddenly awakening to the fact of there being a God, fancy themselves therefore His peculiar people and messengers; your sectarians of every species, small and great, Catholic or Protestant, of high church or low, in so far as they think themselves exclusively in the right and others wrong; and preeminently, in every sect, those who hold that men can be saved by thinking rightly instead of doing rightly, by word instead of act, and wish instead of work:--these are the true fog children--clouds, these, without water; bodies, these, of putrescent vapor and skin, without blood or flesh: blown bag-pipes for the fiends to pipe with--corrupt, and corrupting,--"Swollen with wind, and the rank mist they draw." 24. Lastly, let us return to the lines respecting the power of the keys, for now we can understand them. Note the difference between Milton and Dante in their interpretation of this power: for once, the latter is weaker in thought; he supposes _both_ the keys to be of the gate of heaven; one is of gold, the other of silver: they are given by St. Peter to the sentinel angel; and it is not easy to determine the meaning either of the substances of the three steps of the gate, or of the two keys. But Milton makes one, of gold, the key of heaven; the other, of iron, the key of the prison in which the wicked teachers are to be bound who "have taken away the key of knowledge, yet entered not in themselves."