A quiet Oxford don called Dodgson pre-empted Wittgenstein by several decades, you know...
`When I use a word,' Humpty Dumpty said, in rather a scornful tone, `it means just what I choose it to mean -- neither more nor less.' The question is,' said Alice, `whether you can make words mean so many different things.'
`The question is,' said Humpty Dumpty, `which is to be master -- that's all.'
As for most tragic moment....the fate of Hurin - who in some versions of the Narn, dies while still in despair. I find that almost unbearable.