5 ideas
| 12739 | If we are dreaming, it is sufficient that the events are coherent, and obey laws [Leibniz] |
| 12738 | Successful prediction shows proficiency in nature [Leibniz] |
| 22363 | You have only begun to do real science when you can express it in numbers [Kelvin] |
| 19216 | Propositions (such as 'that dog is barking') only exist if their items exist [Williamson] |
| 20644 | Energy has progressed from a mere formula, to a principle pervading all nature [Kelvin] |