Man is like a dog tied to a moving wagon. If the dog refuses to run along with the wagon he will be dragged by it, yet the choice remains his: to run or be dragged
All events are determined by the logos, and follow in an unbreakable chain of cause and effect. Stoicism is thus from the outset a deterministic system that appears to leave no room for human free will or moral responsibility. In reality the Stoics were reluctant to accept such an arrangement, and attempted to get around the difficulty by defining free will as a voluntary accommodation to what is in any case inevitable
– Hayes, introduction to Meditations by Marcus Aurelius