“None of the accidents form the substratum of another accident; it cannot be said, This is an accident to a thing which is itself an accident to a substance. All accidents are directly connected with the substance.” The Mutakallemim deny the indirect relation of the accident to the substance, because if such a relation were assumed it would follow that the second accident could only exist in the substance after another accident had preceded it, a conclusion to which they would object even with regard to some special accidents; they prefer to show that these accidents can exist in every possible substance, although such substance is not determined by any other accident; for they hold that all the accidents collectively determine the thing. They advance also another proof [in support of this proposition], namely: The substratum which is the bearer of certain attributes must continue to exist for a certain time; how, then, could the accident; which—according to their opinion—does not remain in existence for two moments, become the substratum of something else? Tenth Proposition. This proposition concerns the theory of “admissibility,” which is mentioned by the Mutakallemim, and forms the principal support of their doctrine. Mark its purport: they observe that everything conceived by the imagination is admitted by the intellect as possible; e.g., that the terrestrial globe should become the all-encompassing sphere, or that this sphere should become the terrestrial globe; reason does not find here an impossibility; or that the sphere of fire should move towards the centre, and the sphere of earth towards the circumference. Human intellect does not perceive any reason why a body should be in a certain place instead of being in another. In the same manner they say that reason admits the possibility that an existing being should be larger or smaller than it really is, or that it should be different in form and position from what it really is; e.g., a man might have the height of a mountain, might have several heads, and fly in the air; or an elephant might be as small as an insect, or an insect as huge as an elephant. This method of admitting possibilities is applied to the whole Universe. Whenever they affirm that a thing belongs to this class of admitted possibilities, they say that it can have this form, and that it is also possible that it be found differently, and that the one form is not more possible than the other; but they do not ask whether the reality confirms their assumption. They say that the thing which exists with certain constant and permanent forms, dimensions, and properties, only follows the direction of habit, just as the king generally rides on horseback through the streets of the city, and is never found departing from this habit; but reason does not find it impossible that he should walk on foot through the place; there is no doubt that he may do so, and this possibility is fully admitted by the intellect.