13 ideas
| 3296 | Sense-data are a false objectification of what is essentially subjective [Nagel] |
| 5163 | Basic propositions refer to a single experience, are incorrigible, and conclusively verifiable [Ayer] |
| 3295 | Inner v outer brings astonishment that we are a particular person [Nagel] |
| 5167 | The argument from analogy fails, so the best account of other minds is behaviouristic [Ayer] |
| 3293 | If you assert that we have an ego, you can still ask if that future ego will be me [Nagel] |
| 3292 | The most difficult problem of free will is saying what the problem is [Nagel] |
| 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] |
| 5168 | Moral approval and disapproval concerns classes of actions, rather than particular actions [Ayer] |
| 22489 | 'Good' is an attributive adjective like 'large', not predicative like 'red' [Geach, by Foot] |
| 3294 | As far as possible we should become instruments to realise what is best from an eternal point of view [Nagel] |