De Somniis (lib. i-ii)

But the eunuch and chief butler of Pharaoh, having beheld the plant generative of folly, namely, the vine, adds besides to his delineation there stocks, that he may signify the three extremities of error according to the three different times; for a root is equivalent to extremity.

When, therefore, folly has overshadowed and occupied the whole soul, and when it has left no portion of it unoccupied or free, it not only compels it to commit such errors as are remediable, but such also as are irremediable.