5 ideas
| 23025 | Philosophers should be more inductive, and test results by their conclusions, not their self-evidence [Russell] |
| 22363 | You have only begun to do real science when you can express it in numbers [Kelvin] |
| 13304 | Learned men gain more in one day than others do in a lifetime [Posidonius] |
| 20644 | Energy has progressed from a mere formula, to a principle pervading all nature [Kelvin] |
| 20820 | Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus] |