[236] Ibid. VI., ii., p. 1026, b, 21.
[237] Metaph., VI., iv., p. 1027, b, 29.
[238] Ibid., VI., iv.
[239] Ibid., VI., ii., sub in.; VII., i., sub in.; Topic., I., ix.
[240] These are τί, ποιόν, ποσόν, ποῦ, ποτέ, and πῶς. Τί is associated with πρός in the question πρὸς τί, which has no simple English equivalent. Apparently it was suggested to Aristotle by ποσόν, how much? in connexion with which it means, in relation to what standard? If we were told that a thing was double, we should ask, double what? Again, the Greeks had a simply compound question, τί παθών, meaning, what was the matter with him? or, what made him do it? From this Aristotle extracted πάσχειν, a wider notion than our passion, meaning whatever is done or happens to anything; which again would suggest ποιεῖν, what it does. Finally, πῶς, taken alone, is too vague a question for any answer, but must be taken in its simplest compounds πῶς διακείμενον and πῶς ἔχον, which give the two rarely-occurring categories ἔχειν and κεῖσθαι, for which it is on one occasion substituted (Soph. El., xxii., p. 178, b, 39). Διὰ τί does not figure among the categories, because it is reserved for the special analysis of οὐσία.
[241] As Grote has shown in his chapter on the Categories.
[242] Eth. Nic., I., iv., p. 1096, a, 24, where six are enumerated.
[243] Metaph., VII. passim.
[244] Metaph., VII., vi., p. 1031, b, 18 ff.
[245] Zeller, Phil. d. Gr., II., b, 309.