9 ideas
| 8724 | The meaning of 'know' does not change from courtroom to living room [Unger] |
| 8722 | No one knows anything, and no one is ever justified or reasonable [Unger] |
| 8723 | An evil scientist may give you a momentary life, with totally false memories [Unger] |
| 20949 | Study the use of words, not their origins [Herder] |
| 7669 | We cannot attain all the ideals of every culture, so there cannot be a perfect life [Herder, by Berlin] |
| 21991 | The middle class gain freedom through property, but workers can only free all of humanity [Marx, by Singer] |
| 21990 | Theory is as much a part of a revolution as material force is [Marx] |
| 7668 | Herder invented the idea of being rooted in (or cut off from) a home or a group [Herder, by Berlin] |
| 7128 | Religion is the opium of the people, and real happiness requires its abolition [Marx] |