None the less, there are two points in the law of Causality, which appear to favour the idea of fatalism, though in reality, they are merely corollaries of Karma. According to the first, every force is fatal, in the sense that, if left to itself, it is indestructible. This is not fatality, for the force can be modified by meeting with forces differing in character, and if no such encounter takes place, it finally unites with the cosmic Law, or else is broken to pieces upon it, according as it moves with evolution or against it.[35] Only in one sense, then, is it fatal; it cannot be destroyed save by an opposing force of the same momentum. For instance, in order to annihilate an obstructive force, created in the past, the soul must expend an amount of energy that is equal and opposite to that force; it meanwhile cannot devote itself to any other work, thus causing, in one sense, a useless production of energy; in other words, evolution will suffer delay,[36] but, we must repeat, that is not fatality. Now to the second point. Thought, by repetition, gains ever-increasing energy, and when the forces which thoughts accumulate have become as powerful as those of the will of the Ego which created them, a final addition of energy--another thought--alone is needed for the will to be overcome and the heavier scale of the balance to incline; then the thought is fatally realised in the action. But so long as dynamic equilibrium has not been reached, the will remains master, although its power is ever diminishing, in proportion as the difference in the forces becomes smaller. When equilibrium is reached, the will is neutralised; it becomes powerless, and feels that a fall is only a question of moments, and, with a fresh call of energy, the thought is fatally realised on the physical plane; the hour of freedom has gone and the fatal moment arrived. Like some solution that has reached saturation point, obedient to the last impulse, this thought crystallises into an act. Many a criminal thus meets, in a single moment, the fatality he has created in the course of several incarnations; he no longer sees anything, his reason disappears; in a condition of mental darkness his arm is raised, and, impelled by a blind force, he strikes automatically. "What have I done?" he immediately exclaims in horror. "What demon is this that has taken possession of me?"