| Chapter # | Sentence # | Quote |
|---|---|---|
| 5 | 75 | Only he can tie it, and, more importantly, only he View more quotes about knows">knows the reverse turns by which that knot, provided it has been untouched, is untied". |
| 5 | 76 | "Anyone then," said Elizabeth, "could untie the knot". |
| 5 | 77 | "Surely," I said. |
| 5 | 78 | "The problem is to reconstruct the knot after it has been untied". |
| 5 | 79 | "The owner of the compartment," said Elizabeth, "returning to the compartment and untying the knot can tell immediately whether or not it is his own knot". |
| 5 | 80 | "Correct," I said. |
| 5 | 81 | "And thus he knows," said Elizabeth, "whether or not the compartment has been entered in his absence". |