4 ideas
| 22363 | You have only begun to do real science when you can express it in numbers [Kelvin] |
| 22489 | 'Good' is an attributive adjective like 'large', not predicative like 'red' [Geach, by Foot] |
| 13605 | Gravity isn't a force, because it produces effects without diminishing [Mayer] |
| 20644 | Energy has progressed from a mere formula, to a principle pervading all nature [Kelvin] |