| 14039 | Above and below us will never appear to be the same, because it is inconceivable [Epicurus] |
| 13172 | What we cannot imagine may still exist [Leibniz] |
| 3802 | Why pronounce impossible what you cannot imagine? [Dennett] |
| 3903 | The conceivable can't be a test of the possible, if there are things which are possible but inconceivable [Scruton] |
| 17958 | The apparently metaphysically possible may only be epistemically possible [Vetter] |
| 19268 | Inconceivability (implying impossibility) may be failure to conceive, or incoherence [Vaidya] |