Such an understanding of the absolute, such world wisdom, will not make you conceited, because it makes you conscious of the fact that your understanding has grasped celestial truth which at the same time is terrestrial, only in a very general way. You possess nothing but a definition of truth. And without denying that definitions are valuable and instructive, I, at the same time, point out that you know very little about astronomy when you know that it is the science of the stars. No matter, therefore, how clearly I may have defined truth, we require for its complete understanding all the details of science, and that is too much for me, for you, and for any individual human being. Just as our vision never exhausts the visible, because the eye sees an object but does not fully penetrate it, just so can the intellect never fully understand and fathom the absolute all, the truth, or God. But we can understand and fathom individual truths, parts of the universal truth. What understanding grasps is not the truth itself, but yet it is true understanding. TENTH LETTER Dear Eugene: My previous lectures instructed you as to the very trivial fact that the thought is a part of the world. In proceeding from the part to the whole, I passed logically from the mouth of the river to its source. The universe is the maternal womb of the intellect as of all things. It occurs to me that you or some teacher of logic might accuse my letters of lack of logic. It may seem that these lectures fail to present the subject matter in a strictly systematized form. You will, please, excuse this in part with the fact that they appear in the form of letters. This form demands that the contents should be logically arranged and rounded off in each letter. It should furthermore serve as an excuse for any defect, that my subject is not a finished one, not perfectly elaborated by others before me. I am here not merely a lecturer, but also an explorer on a field which, though much investigated, yet is still rather obscure. The conclusion of my last letter explained that the use of the term God for the universe has much to recommend it and much to disqualify it. But it is easily apparent that the universe with its absolute qualities is closely related to that infinite being of whom Jakob Boehme, the philosophical shoemaker, said: "He is neither the light nor the darkness, neither love nor anger, but the eternal One.... Hence all forces are merely one sole force." That nothing exists outside of the universe, that everything is contained in the All, that the All, with all real and imagined beings, is everything, that it is neither sweet nor sour, neither great nor small, but just everything and all, this statement is as obvious as the often and long repeated statement of identity: A equals A.