11 ideas
| 20752 | For man, being is not what he is, but what he is going to be [Ortega y Gassett] |
| 11966 | If there are essential properties, how do you find out what they are? [Chisholm] |
| 11965 | Could possible Adam gradually transform into Noah, and vice versa? [Chisholm] |
| 5163 | Basic propositions refer to a single experience, are incorrigible, and conclusively verifiable [Ayer] |
| 5167 | The argument from analogy fails, so the best account of other minds is behaviouristic [Ayer] |
| 5164 | A statement is meaningful if observation statements can be deduced from it [Ayer] |
| 5165 | Directly verifiable statements must entail at least one new observation statement [Ayer] |
| 5166 | The principle of verification is not an empirical hypothesis, but a definition [Ayer] |
| 5162 | Sentences only express propositions if they are meaningful; otherwise they are 'statements' [Ayer] |
| 20756 | Instead of having a nature, man only has a history [Ortega y Gassett] |
| 5168 | Moral approval and disapproval concerns classes of actions, rather than particular actions [Ayer] |