Themistius · thesis 19.4

Thesis 19.4

Latin

Praeter duas species demonstrationis quia quas ponit Aristoteles, tertia alia ponenda est, et est cum una proprietas per coeuam proprietatem demonstratur.

Copy-text: Farmer 1998, line 14893

English

Besides the two kinds of demonstration from effect that Aristotle posits, a third must be added, which occurs when one property is demonstrated through a coeval property.

Sense checked against farmer1998:14948; 'coeuam proprietatem' rendered 'coeval property', which Farmer's note (farmer1998:14966) glosses as a 'convertible property'.

Translation: machine-drafted 2026-09-26 by TRANSLATOR-T03b; sense checked against farmer1998:14948; awaiting human check

Attribution: reported according to Themistius (section 19 of the historical theses) · Pico's stance: reports

Farmer's cross-references

• 3>48 Praeter tria demonstrationis genera, quia, propter quid, et simpliciter, quae ponunt Aristoteles et commentator, datur quartum genus demonst
• 7.10 Tres modi per se sunt ad demonstrationem utiles: primus, secundus et quartus.
• 7.11 In omni demonstratione praeterquam in demonstratione simpliciter fieri potest circulatio.