7 ideas
23647 | Objects have an essential constitution, producing its qualities, which we are too ignorant to define [Reid] |
11958 | Impossibilites are easily conceived in mathematics and geometry [Reid, by Molnar] |
22363 | You have only begun to do real science when you can express it in numbers [Kelvin] |
23646 | Reference is by name, or a term-plus-circumstance, or ostensively, or by description [Reid] |
23645 | A word's meaning is the thing conceived, as fixed by linguistic experts [Reid] |
20328 | A thing is only seen as art in an 'artworld', which has a theory and a history [Danto] |
20644 | Energy has progressed from a mere formula, to a principle pervading all nature [Kelvin] |