Most people have made this mistake of thinking Middle-earth is a particular kind of earth or is another planet of the science fiction sort but it's just an old fashioned word for this world we live in, as imagined surrounded by the Ocean.

All the same, I should like it all plain and clear," said he obstinately, putting on his business manner (usually reserved for people who tried to borrow money off him), and doing his best to appear wise and prudent and professional and live up to Gandalf's recommendation. "Also I should like to know about risks, out-of-pocket expenses, time required and remuneration, and so forth"--by which he meant: "What am I going to get out of it ? and am I going to come back alive?

Don't tell us about dreams – dream dinners aren't any good and we can't share them.

And yet, Eomer, I say to you that she loves you more truly than me, for you she loves and knows; but in me she loves only a shadow and a thought: a hope of glory and great deeds, and lands far from the fields of Rohan. - Aragorn to Eomer, of Eowyn

Frodo drew himself up, and again Sam was startled by his words and his stern voice. 'On the Precious? How dare you?' he said. 'Think! Would you commit your promise to that, Smeagol? It will hold you. But it is more treacherous than you are. It may twist your words. Beware!

A box without hinges, key, or lid, yet golden treasure inside is hid.

I shall claim full amends for every fall and stubbed toe, if you do not lead us well.