and, if there is an eternal mobile, it is not in motion in virtue of a potentiality, except in respect of 'whence' and 'whither' (there is nothing to prevent its having matter which makes it capable of movement in various directions).
eta betiko mugitua den ezer baldin badago, ez da potentziaren arabera mugitua izango, leku batetik bestera ez bada (eta honen materia ematea ezerk ez du eragozten);