3 ideas
| 17743 | De Morgan introduced a 'universe of discourse', to replace Boole's universe of 'all things' [De Morgan, by Walicki] |
| Full Idea: In 1846 De Morgan introduced the enormously influential notion of a possibly arbitrary and stipulated 'universe of discourse'. It replaced Boole's original - and metaphysically a bit suspect - universe of 'all things'. | |
| From: report of Augustus De Morgan (works [1846]) by Michal Walicki - Introduction to Mathematical Logic History D.1.1 | |
| A reaction: This not only brings formal logic under control, but also reflects normal talk, because there is always an explicit or implicit domain of discourse when we talk. Of virtually any conversation, you can say what it is 'about'. |
| 15788 | Syntax and semantics are indeterminate, and modern 'semantics' is a bogus subject [Quine, by Lycan] |
| Full Idea: Quine has argued tirelessly that syntax and 'semantics' are indeterminate, and linguistic semantics of the sort that is currently in favor is a pseudoscience and a pipe dream. | |
| From: report of Willard Quine (Methodological Reflections on Current Linguistic Theory [1972]) by William Lycan - The Trouble with Possible Worlds 02 | |
| A reaction: I think the defence of such things is that they may not integrate into science very well (or even integrate at all), but semantics is intended to integrate into philosophy, and is motivated by philosophical concerns. Quine may be right! |
| 23215 | Even the poorest have a life to lead, and so should consent to who governs them [-] |
| Full Idea: For really I think that the poorest hee that is in England hath a life to live, as the greatest hee; …and every Man that is to live under a Government ought first by his own Consent to put himself under that Government. | |
| From: - (The Putney Debates [1647]) | |
| A reaction: [remark made by Thomas Rainsborough] This is the social contract idea which is explicit in Hobbes. I'm sure we can at least trace it back to John Lilburne in the 1630s. |