The Philosophy of Roger Bacon

He says in the first book of On the Heavens and the World original: "p[ri]mo celi et m[un]di" and through this, because they are never generated, and also toward one another according to their parts naturally, as Aristotle The abbreviation "az" likely refers to Aristoteles (Aristotle). wishes in the book of Meteorology and On Generation and Corruption. In the second book, the Philosopher A standard medieval title for Aristotle. argues that in every genus in which there is the perfect, the imperfect, and the base, everything is held to precede toward the perfect and noble. Because through the center, a straight line guides everything perfect toward a body in a round genus. Likewise, straight bodies are capable of increase and alteration, but both alteration and increase imply imperfection and privation and base kinds. As is well touched upon here through the letters, both regarding the principle of this generation—such as the hard and the soft—their position and what follows will be more ...?. Likewise, that the center unites all contraries, and if there were union, then the hot and the cold, the hard and the soft, would be the same, and likewise for all natural contrarieties. He who rightly considers the play of kinds proves from the senses, as Aristotle says in the books on generation, that which is brought forward

Meteorology

from the Meteorology ...? to the contrary, many things are gathered here, as well as the perpetual substance added. Because he was able to have his place

through the book

around his own [place], he prevents a vacuum here, and through this he argues that it could divide bodies. Nevertheless, let the union of their origin be raised, one from the other, since in their genus no body is in the middle of them that could fill the space; hence, both in the middle and on the sides, there would be a vacuum. Because of this, as a body enters them, it happens in an instant from their sides into the middle, as for example in this kind: when a tablet of flat surface is skillfully applied to water through the air, or to a flat body, so that when the water is raised from the other body after it has been drawn from it, while the air or water enters the outer parts of that tablet and the other body. Since there is no vacuum, the air or water will reach the interior parts first and the center of the tablet together. They were indeed accustomed to say that this motion happens instantaneously, or happens in a brief time, but privation is not an affirmative cause, and the operating place joins together. For this reason, no power is able to act in an instant, as is plain. Nor does nature, through the natural order, do anything after which a natural operation [ceases].

Likely referring to Alexander of Aphrodisias, a famous Greek commentator on Aristotle whose works were influential in the Middle Ages.