3 ideas
| 22881 | Should we value environmental systems for human benefit, or for their own sake? [Hildebrand] |
| 5064 | Rights are moral significance, or liberty, or right not to be restrained, or entitlement [Mawson] |
| 9425 | Lewis later proposed the axioms at the intersection of the best theories (which may be few) [Mumford on Lewis] |