Figured it out. I knew that was a clue I hadn't realised the significance of.

Who is responsible for the quote?

Lupo's clue filled me in.

Last independent puzzle.

Lost in a sea of letters.

I have reached the heady heights of having solved every puzzle before this one. And still I'm stuck.

There appears to be an additional clue on the solve page, but I've not found it helpful.

Feel around, what can you read with your fingers?

Next in my line of "argh"... page 44.

And got it.

This one has me stumped and has for a while.