15 ideas
| 5515 | Imaginary cases are good for revealing our beliefs, rather than the truth [Parfit] |
| 6021 | It is only when we say a proposition that we speak truly or falsely [Sext.Empiricus] |
| 6020 | 'Man is a rational mortal animal' is equivalent to 'if something is a man, that thing is a rational mortal animal' [Sext.Empiricus] |
| 5516 | Reduction can be by identity, or constitution, or elimination [Parfit, by PG] |
| 6026 | How can you investigate without some preconception of your object? [Sext.Empiricus] |
| 5514 | Psychologists are interested in identity as a type of person, but philosophers study numerical identity [Parfit] |
| 5521 | If my brain-halves are transplanted into two bodies, I have continuity, and don't need identity [Parfit] |
| 5522 | Over a period of time what matters is not that 'I' persist, but that I have psychological continuity [Parfit] |
| 5519 | It is fine to save two dying twins by merging parts of their bodies into one, and identity is irrelevant [Parfit] |
| 5520 | If two humans are merged surgically, the new identity is a purely verbal problem [Parfit] |
| 5518 | It doesn't matter whether I exist with half my components replaced (any more than an audio system) [Parfit] |
| 6032 | Right actions, once done, are those with a reasonable justification [Sext.Empiricus] |
| 13304 | Learned men gain more in one day than others do in a lifetime [Posidonius] |
| 1517 | The tektraktys (1+2+3+4=10) is the 'fount of ever-flowing nature' [Sext.Empiricus] |
| 20820 | Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus] |