How can I get past the Slaves?

Hint 1 of 12:

Have you been to the Royal Museum?

Hint 2 of 12:

Did you meet Callimachus and Apollonius?

Hint 3 of 12:

Have you looked them up in the dictionary?

Hint 4 of 12:

Maybe you could play a little trick on them?

Hint 5 of 12:

Have you found anything that might help, a poem or two?