The unity of the understanding is the unity of God. To the understanding the consciousness of its unity and universality is essential; the understanding is itself nothing else than the consciousness of itself as absolute identity, i.e., that which is accordant with the understanding is to it an absolute, universally valid, law; it is impossible to the understanding to think that what is self-contradictory, false, irrational, can anywhere be true, and, conversely, that what is true, rational, can anywhere be false and irrational. "There may be intelligent beings who are not like me, and yet I am certain that there are no intelligent beings who know laws and truths different from those which I recognise; for every mind necessarily sees that two and two make four, and that one must prefer one's friend to one's dog." [24] Of an essentially different understanding from that which affirms itself in man, I have not the remotest conception, the faintest adumbration. On the contrary, every understanding which I posit as different from my own, is only a position of my own understanding, i.e., an idea of my own, a conception which falls within my power of thought, and thus expresses my understanding. What I think, that I myself do, of course only in purely intellectual matters; what I think of as united, I unite; what I think of as distinct, I distinguish; what I think of as abolished, as negatived, that I myself abolish and negative. For example, if I conceive an understanding in which the intuition or reality of the object is immediately united with the thought of it, I actually unite it; my understanding or my imagination is itself the power of uniting these distinct or opposite ideas. How would it be possible for me to conceive them united--whether this conception be clear or confused--if I did not unite them in myself? But whatever may be the conditions of the understanding which a given human individual may suppose as distinguished from his own, this other understanding is only the understanding which exists in man in general--the understanding conceived apart from the limits of this particular individual. Unity is involved in the idea of the understanding. The impossibility for the understanding to think two supreme beings, two infinite substances, two Gods, is the impossibility for the understanding to contradict itself, to deny its own nature, to think of itself as divided.