Studies in a Mosque - The Search For Mecca

THE BKOTHERHOOD OF PURITY. 199
handicrafts ; (h) selling and buying, commerce,
agriculture, the breeding of cattle ; (i) biography.
II. Beligious studies help the soul in its struggle
towards the other world. They are five—revelation,
explanation, tradition, law, and illumination.
III. PHILOSOPHICA.L SCIENCES are of four sorts— pro-
paedeutics, logic, physics, theology.
A. Pkopaedeutics consist of arithmetic, geometry,
astronomy, music.
B. Logic is of two kinds : (a) analytica, the art
of apprehending; (b) rhetorica, or the art
of those (sophists) who in theorizing and
arguing would lead one into error.
1. The Isagoge aims at estabhshing a clear under-
standing of the six words employed in philosophical
propositions : individual, species, genus, essential,
enduring, and accidental properties—what each is in
itself, what the six have in common, in what consists
their difference, and how they bear upon the idea of
the soul.
2. The Categories are to explain the meaning of the
ten words, each of which denotes a genus generum.
The first of these is substance ; the other nine, attributes.
This tract shows what each of them is, how
many species it contains. Further, it teaches the
knowledge of the signs by which each is to be distin-
guished from the remainder ;
and finally it points out
how these all lead to the ideas which are contained in
the notion of the soul.
3. The Hermeneutics lay down how to combine tlie