[4] on which account Moses confesses that he is "a man of a slight voice and slow of speech from the time when God first began to converse with him." [2] And this testimony of the prophet is unerring; for it is natural for the organs of speech to be checked, and for the reason which is collected in the mind to be borne onwards with unrestrained impetuosity, philosophically examining the unceasing beauty of ideas not of words, with fluent and sublime power;