A fourth kind of knowledge by presence is also imaginable...

A fourth kind of knowledge by presence is also imaginable, and this is the knowledge of one another of two immaterial effects at the same level, but to establish that there is such a kind of knowledge by proof is difficult.

It is to be concluded that in all the kinds of knowledge by presence, knowledge is the essence of the knower himself and is immaterial, and naturally it is not a kind of psychic accident or quality, although it is possible for the known to be a substance or an accident, and according to the endorsed position, will be either immaterial or material.

The Nature of Acquired Knowledge Without a doubt, knowledge in the sense of definite belief, as opposed to opinion and doubt, is nevertheless similar to opinion and doubt in that it is a mental state or quality, and like other types of mental qualities, it is devoid of matter, for it does not make sense to suppose that a material accident occurs in an…