4 ideas
9103 | A universal is not a real feature of objects, but only a thought-object in the mind [William of Ockham] |
14289 | There are some assertable conditionals one would reject if one learned the antecedent [Jackson, by Edgington] |
9104 | A universal is the result of abstraction, which is only a kind of mental picturing [William of Ockham] |
9425 | Lewis later proposed the axioms at the intersection of the best theories (which may be few) [Mumford on Lewis] |