De Agricultura

But of those who disregard our warnings, Moses says, "One man will inhabit his house, and another will obtain his vineyard, and another will marry a wife." And the meaning of this is something of this kind: the powers which have been enumerated, of careful beginning, and improvement, and perfection, will never fail altogether, but will at different times approach and unite themselves with different persons, and will not be always forming the same souls, but will change about, resembling seals;