[223] and the enigmatical meaning which he conceals under this allegory is this:— There is no plant of true joy naturally implanted in the soul of the bad man; inasmuch as it has no healthy roots, but only such as are burnt and reduced to ashes, since, instead of water, Heaven has poured upon it the fire of lightning which cannot be quenched, God having adjudged that as fitting punishment for the impious. But there is implanted in it the plant [88] of excessive desire, barren of all good things, and destitute of anything deserving of regard or contemplation, which he here compares to a vine. Not meaning that one which is the parent of eatable fruit, but that one which produces bitterness, and wickedness, and ungodly cunning; and which is most fertile in anger, and fury, and the most savage dispositions; biting the soul like an asp or a viper, inflicting envenomed wounds, utterly incurable.