In the system of Aristotelian logic, the square of opposition is a diagram representing the different ways in which each of the four propositions of the system is logically related ('opposed') to each of the others. The system is also useful in the analysis of syllogistic logic, serving to identify the allowed logical conversions from one type to another.
Read more about Square Of Opposition: Summary, The Problem of Existential Import, Modern Squares of Opposition, Logical Hexagons and Other Bi-simplexes
Famous quotes containing the words square and/or opposition:
“Mark you the floore? that square & speckled stone,
Which looks so firm and strong,
Is Patience:”
—George Herbert (1593–1633)
“A man with your experience in affairs must have seen cause to appreciate the futility of opposition to the moral sentiment. However feeble the sufferer and however great the oppressor, it is in the nature of things that the blow should recoil upon the aggressor. For God is in the sentiment, and it cannot be withstood.”
—Ralph Waldo Emerson (1803–1882)