But it is the theory of the most rigid and universal Necessity: all the causative forces enter into the system, and so every several phenomenon rises necessarily; where nothing escapes Destiny, nothing has power to check or to change. Such forces beating upon us, as it were, from one general cause leave us no resource but to go where they drive. All our ideas will be determined by a chain of previous causes; our doings will be determined by those ideas; personal action becomes a mere word. That we are the agents does not save our freedom when our action is prescribed by those causes; we have precisely what belongs to everything that lives, to infants guided by blind impulses, to lunatics; all these act; why, even fire acts; there is act in everything that follows the plan of its being, servilely. Enneads: III I. 7
The Universal circuit is like a breeze, and the voyager, still or stirring, is carried forward by it. He has a hundred varied experiences, fresh sights, changing circumstances, all sorts of events. The vessel itself furnishes incident, tossing as it drives on. And the voyager also acts of himself in virtue of that individuality which he retains because he is on the vessel in his own person and character. Under identical circumstances individuals answer very differently in their movements and acts: hence it comes about that, be the occurrences and conditions of life similar or dissimilar, the result may differ from man to man, as on the other hand a similar result may be produced by dissimilar conditions: this (personal answer to incident) it is that constitutes destiny. Enneads: III IV. 6