4 ideas
| 10245 | One geometry cannot be more true than another [Poincaré] |
| 22363 | You have only begun to do real science when you can express it in numbers [Kelvin] |
| 5467 | Euler said nature is instrinsically passive, and minds cause change [Euler, by Ellis] |
| 20644 | Energy has progressed from a mere formula, to a principle pervading all nature [Kelvin] |