A doubt arises here. Is it possible, or not, to gain a knowledge of Brahman from the characteristic marks stated in this passage?--It is not possible, the Pûrvapakshin contends. The attributes stated in that passage--viz. being that from which the world originates, and so on--do not properly indicate Brahman; for as the essence of an attribute lies in its separative or distinctive function, there would result from the plurality of distinctive attributes plurality on the part of Brahman itself.--But when we say 'Devadatta is of a dark complexion, is young, has reddish eyes,' &c., we also make a statement as to several attributes, and yet we are understood to refer to one Devadatta only; similarly we understand in the case under discussion also that there is one Brahman only!--Not so, we reply. In Devadatta's case we connect all attributes with one person, because we know his unity through other means of knowledge; otherwise the distinctive power of several attributes would lead us, in this case also, to the assumption of several substances to which the several attributes belong. In the case under discussion, on the other hand, we do not, apart from the statement as to attributes, know anything about the unity of Brahman, and the distinctive power of the attributes thus necessarily urges upon us the idea of several Brahmans.--But we maintain that the unity of the term 'Brahman' intimates the unity of the thing 'Brahman'!--By no means, we reply. If a man who knows nothing about cows, but wishes to know about them, is told 'a cow is that which has either entire horns, or mutilated horns, or no horns,' the mutally exclusive ideas of the possession of entire horns, and so on, raise in his mind the ideas of several individual cows, although the term 'cow' is one only; and in the same way we are led to the idea of several distinct Brahmans. For this reason, even the different attributes combined are incapable of defining the thing, the definition of which is desired.--Nor again are the characteristics enumerated in the Taitt. passage (viz. creation of the world, &c.) capable of defining Brahman in the way of secondary marks (upalakshana), because the thing to be defined by them is not previously known in a different aspect. So-called secondary marks are the cause of something already known from a certain point of view, being known in a different aspect--as when it is said 'Where that crane is standing, that is the irrigated field of Devadatta.'--But may we not say that from the text 'The True, knowledge, the Infinite is Brahman,' we already have an idea of Brahman, and that hence its being the cause of the origin, &c., of the world may be taken as collateral indications (pointing to something already known in a certain way)?--Not so, we reply; either of these two defining texts has a meaning only with reference to an aspect of Brahman already known from the other one, and this mutual dependence