3 ideas
| 20344 | Music is not an expressive art, because it expresses no familiar emotions [Hanslick, by Wollheim] |
| 7903 | The six perfections are giving, morality, patience, vigour, meditation, and wisdom [Nagarjuna] |
| 18202 | The concept of a field gradually replaced the substances in explaining relations between charges [Einstein/Infeld] |