7 ideas
| 7661 | Truth is the opinion fated to be ultimately agreed by all investigators [Peirce] |
| 19089 | Our whole conception of an object is its possible practical consequences [Peirce] |
| 7660 | We are aware of beliefs, they appease our doubts, and they are rules of action, or habits [Peirce] |
| 3061 | Anaxarchus said that he was not even sure that he knew nothing [Anaxarchus, by Diog. Laertius] |
| 22363 | You have only begun to do real science when you can express it in numbers [Kelvin] |
| 14906 | Non-positivist verificationism says only take a hypothesis seriously if it is scientifically based and testable [Ladyman/Ross on Peirce] |
| 20644 | Energy has progressed from a mere formula, to a principle pervading all nature [Kelvin] |