display all the ideas for this combination of texts
3 ideas
14081 | Identities can be true despite indeterminate reference, if true under all interpretations [Schaffer,J] |
16504 | Two eggs can't be identical, because the same truths can't apply to both of them [Leibniz] |
8650 | Things are the same if one can be substituted for the other without loss of truth [Leibniz] |