The Origins of Nature

There are certain artificial things in which rectitude subsists for the sake of something. The like also takes place in the productions of nature, so that monsters will be the errors of that which operates for the sakeof something. For those things subsists from nature, which being continually moved from a certain principle, contained in themselves, arrive at a certain end. From each principle however, neither the same thing is produced in each individual, nor that which is casual; but it always arrives at the same end unless something impedes. We say that a stranger came fortuitously, and having redeemed a certain person departed, when he so acted as if he came for the purposes of this, yet