The history of philosophy, in eight parts by Thomas Stanley.

CHAP. XXXI.

Of not-Syllogistick-conclusive Reasons.

a 1.1 REasons not-syllogistically-conclusive (which are likewise especi∣ally called (as their genus) conclusive in opposition to Syllo∣gismes) are those which conclude not by way of Syllogisme, as,

It is false, that it is both night and day, But it is day, Therefore it is not night.

And this of Chrysippus.

Whatsoever is good is laudable, Whatsoever is laudable is honest, Therefore whatsoever is good is honest.

These not-syllogistick, or categorick-conclusives, are frequently used by the Stoicks (as by Zeno in Cicero) but immethodically,

not reduced to Mood and figure. Those they applyed onely to tropicall reasons•• as in which consisteth the sole way and order of inference. The Categoricall are not Syllogi••ines, because in them somthing is ever omitted, and therefore they are 〈 in non-Latin alphabet 〉〈 in non-Latin alphabet 〉, immethodically conclusive; as in that argument of Chrysippus last mentioned, two assumptions, and an inference are omitted, for it ought to be thus,

If it be good, it is laudable, But it is good, Therefore it is laudable.

And again,

If it be laudable, it is honest, But it is laudable, Therefore it is honest.

Hence are derived those reasons which are called 〈 in non-Latin alphabet 〉〈 in non-Latin alphabet 〉, and 〈 in non-Latin alphabet 〉〈 in non-Latin alphabet 〉, adjic••ent and adject, consisting of propositions con∣tinually assumed without conclusions. Adject are those whose conclusion is omitted; Adjicient, those whose d••monstrative pro∣position is omitted, as,

The first of every second, The second of every third, The third of every fourth, Therefore the first of every ••ourth.

In this adject, the conclusion is omitted, which is, therefore the first of every third

Notes

• a 1.1

  Laert.