But what determines this point of view? Leibniz : understand, each of us expresses the totality of the world, only he expresses it in an obscure and confused way. Obscurely and confused means what in Leibniz's vocabulary? That means that the totality of the world is really in the individual, but in the form of minute perception. Minute perceptions. Is it by chance that Leibniz is one of the inventors of differential calculus? These are infinitely tiny perceptions, in other words, unconscious perceptions. Later we will see why this is linked to differential calculus, but notice that the minute perceptions of the unconscious are like differentials of consciousness, it's minute perceptions without consciousness.