XLIII. (245) Therefore he has called the purifying victims which are to be offered up for the three offenders, the mind, speech, and the action, a sheep, and a pair of turtle doves or pigeons, and the tenth part of a sacred measure of fine flour; thinking it fit that the mind should be purified by a sheep, the speech by winged creatures, and the action by fine flour: Why is this? (246) Because, as the mind is the most excellent thing in us, so also is the sheep the most excellent among irrational animals, inasmuch as it is most gentle, and also as it gives forth a yearly produce in its fleece, for the use and also for the ornament of mankind. For clothes keep off all injury from both cold and heat, and also they conceal the unmentionable parts of nature, and in this way they are an ornament to those who use them: (247) therefore the sheep, as being the most excellent of animals, is a symbol of the purification of the most excellent part of man, the mind. And birds are an emblem of the purification of speech: for speech is a light thing, and winged by nature, flying and penetrating in every direction more swiftly than an arrow. For what is once said can never be re-called; [this resembles what is said by Horace in A. P. 390 and in Epist. I. 18.71.] but being borne abroad, and running on with great swiftness, it strikes the ears and penetrates every sense of hearing, resounding loudly: but speech is of two kinds, one true and the other false; (248) on which account it appears to me to be here compared to a pair of turtle doves or young pigeons: and of these birds one he says is to be looked upon as a sin offering, since the speech which is true is wholly and in all respects sacred and perfect, but that which is false is very wrong and requires correction. (249) Again, as I have already said, fine flour is a symbol of the purification of activity, but it is sorted from the commoner sort by the hands of the bakers, who make the business their study. On which account the law says, "And the priest having taken an entire handful, shall place it on the altar as a memorial of them," by the word handful, indicating both the endeavor and the action. (250) And he speaks with exceeding accuracy with respect to the sheep, when he says, "And if his hand be not strong enough to supply a sheep;" but with respect to the birds he says, "And if he cannot find a bird." Why is this? Because it is a sign of very great strength and of excessive power, to get rid of the errors of the mind: but it does not require any great strength, to check the errors of words; (251) for, as I have said already, silence is a remedy for all the offences that can be committed by the voice, and every one may easily practise silence; but yet, by reason of their chattering habits and want of moderation in their language, many people cannot find out how to impose a limitation on their speech.