4 ideas
| 22363 | You have only begun to do real science when you can express it in numbers [Kelvin] |
| 5954 | All inventions of the mind aim at pleasure, and those that don't are worthless [Metrodorus of Lamp., by Plutarch] |
| 7903 | The six perfections are giving, morality, patience, vigour, meditation, and wisdom [Nagarjuna] |
| 20644 | Energy has progressed from a mere formula, to a principle pervading all nature [Kelvin] |