Our logic is the science of understanding. It teaches that you must not search for understanding by cudgeling your brain, but only in connection with experience, with the interrelation of things. Since man in his experience also meets errors, science was dominated for centuries by the question whether truth and experience are not two different things, whether all our experience is only an illusion of our senses. Cartesius replied to this: "No; the belief in a perfect, true being cannot admit of such a delusion." By substituting the concept of truth for the concept of God, we are certain that the world of experience is not a ghost, but the most actual reality. Although the great Kant called the cosmic truth a phenomenon, because he could not divest his mind of transcendental faith, of the faith in a transcendental truth, still we know today that all distinctions which are ever made constitute but a nibbling at the universal unit. As necessarily as all variety in baking produces bakery wares, just as necessarily heaven and earth, and everything connected with them, are parts of the indivisible truth which is also called nature, cosmos, universe, God, and experience. Language gives to its darling truth many different pet names, just as a happy mother calls her heart's treasure by a thousand endearing terms. Feuerbach reasons in this fashion: "If God is not a personal being different from nature and man, then he is an entirely superfluous being.... The use of the word God which is always combined with the conception of a separate being, is a disturbing and confusing abuse. Why do you want to be a theist, if you are a naturalist, or a naturalist if you are a theist? Away with this contradiction! Where God is confounded with nature, or nature with God, there is neither God nor nature, but a mystical amphibious hermaphrodite." Feuerbach is right. The name of God is much abused. But truth is also blasphemed by negation and frivolousness. The sober understanding that God, truth, nature, are various names for the same thing permits us to play with them without despairing of the matter. Indeed, this play of words serves to make the subject clear. But logic demands that we recognize truth as the absolute, as the power, the force, and the glory, which comprises all logical and illogical distinctions, together with the things to be distinguished, even the faculty of distinguishing itself.