4 ideas
13639 | Quine says higher-order items are intensional, and lack a clearly defined identity relation [Quine, by Shapiro] |
13007 | Archimedes defined a straight line as the shortest distance between two points [Archimedes, by Leibniz] |
21557 | Russell confused use and mention, and reduced classes to properties, not to language [Quine, by Lackey] |
16719 | The primary qualities are mixed to cause secondary qualities [Burley] |