5. Now so far in its course their doctrine, even if it does overstep the bounds of truth, at all events derives one absurdity from another by a kind of logical sequence: but from this point onwards their teaching takes the form of incoherent fable. Strict inference points to the complete destruction of the soul; for that which has once fallen from the exalted state will be unable to halt at any measure of wickedness, but will pass by means of its relation with the passions from rational to irrational, and from the latter state will be transferred to the insensibility of plants; and on the insensible there borders, so to say, the inanimate; and on this again follows the non-existent, so that absolutely by this train of reasoning they will have the soul to pass into nothing: thus a return once more to the better state is impossible for it: and yet they make the soul return from a bush to the man: they therefore prove that the life in a bush is more precious than an incorporeal state.