When he started ranting about how the government was out to get him, I thought he'd 'lost his marbles'. [='gone crazy']
Let's play 'marbles'. = Let's play a game of 'marbles'.
the museum's polished 'marble' floor/staircase
(..) and they'll be distracted. Take away their freedom and still they'll roar. The beating heart of Rome... is not the marble of the Senate. It's the sand of the Colosseum. He'll bring them death, and they will (..)2000 Gladiator