Directory:Logic Museum/The Square of Opposition

THE SQUARE OF OPPOSITION

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Apuleius' square

A collection of source material on the famous Square of Opposition. The diagram above is from a ninth century manuscript of Apuleius' commentary on Aristotle's Perihermaneias, probably one of the oldest surviving pictures of the square.

<a href = "apuleius-commentary.htm">Apuleius' Commentary on the Perihermaneias</a>
<a href = "perihermaneias.htm">Boethius' translation (in Latin) of the Perihermaneias with Edghill's English translation</a>
<a href = "1periherm67.htm">Edward Buckner's translation of chapters 6 and 7</a>
<a href = "summatotiuslogicae.htm">Natalis on Equipollence</a>
<a href = "nullohomine.htm">Every man is an animal</a>
<a href = "brentanoinnovations.htm">Brentano's Logical Innovations</a>

External links
<a href = "http://www.iep.utm.edu/s/sqr-opp.htm">Internet Encyclopedia entry</a> (This is OK)
<a href = "http://en.wikipedia.org/w/index.php?title=Square_of_opposition&oldid=126488188">Wikipedia April 2007 entry</a> (I wrote part of this).
<a href = "http://plato.stanford.edu/entries/square">Parsons' SEP entry</a> (I shall be discussing Parson's view at Montreux).
<a href = "http://www.humnet.ucla.edu/humnet/phil/faculty/tparsons/Medieval Logic/Chapter 2.doc"> Chapter 2</a> of Parson's book on medieval logic, which covers similar ground.
<a href = "http://www.fordham.edu/gsas/phil/klima/freelog.htm">Old directions in free logic, by Gyula Klima</a>
<a href = "http://www.square-of-opposition.org">Montreux International Congress</a> on the Square.

Edward Buckner
London, May 2007