_Plate’s_ Monism rejects principally everything metaphysical: “Monism is the short term for the natural science view of the world, that rejects all preternatural and supernatural ideas.” Solutions, not given by the natural sciences, simply do not exist for him; for him the sun sets on the horizon of his natural science. “Natural laws comprise all that we are able to fathom: what is behind them, or what is living in them and operates in them, is the ultimate question for philosophy, and there one thinks this way, another that way” (_Plate_). Nevertheless, he knows that “Out of nothing can come nothing: hence matter is eternal,” and he is certain that there is no personal God, no angel nor devil, no beyond nor immortality. Whoever fails to think the same way is no scientist, he is not even a man of sound reason: because “he who has grasped even the elements of natural science, the unity and strict conformity to law of the natural forces, and has a head for sound reasoning, will become a monist all by himself, while the rest are past help, anyhow.” “The Polytheism of the orthodox Church,” he says further, referring to the mystery of the Trinity, “is irrational”; for “Common Sense says that 3 is not equal to 1, nor 1 to 3,” and this is sufficient for _Plate_. “Trinity, the Incarnation of the Son of God, Christ’s Ascension and His descent into hell, Original Sin, Redemption from sin by Christ’s sacrifice, Angels and Devils, the Immaculate Conception, the Infallibility of the Pope, all these and many other doctrines of the orthodox Church are thrown to the winds by anybody convinced of the permanence and imperviousness of the natural laws.” This again is sufficient for him. “The question whether God is personal or impersonal,” says he, in another place, “should never be raised: it is just as preposterous as the question whether God has eyes or not.” Another of his arguments reads: “If the body after death can become dust by natural means, then there must have been conditions under which the dust became by natural means a body.” An analogous argument would be: “If a book can of itself finally wear away into withered and loosened leaves, then there must be conditions under which the perfect book could originate all by itself, and without Prof. _Plate_, out of withered, loose leaves.”