If there is a Word

“Children are infinitely credulous. My Lisa was a dull child, but even so she came up with things that pleased and startled me. 'Are there dragons?' she asked. I said that there were not. 'Have there ever been?' I said all the evidence was to the contrary. 'But if there is a word dragon,' she said, 'then once there must have been dragons.”
― Penelope Lively, Moon Tiger