EXS 24 Logic Sampler Users Group

Since this list is quite a hotspot for deep copyright knowledge, I thought
I'd ask a (hopefully quick) question here:

Does anyone know if it's legal to use other people's quotes as lyrics in a
song? E.g. all vocoded up but still intelligible. Do you have to attribute
the quote to the person in the song, or could you just give them credit in
the liner notes? Would you have to get their permission, or the permission
of the publisher of their book, to use the quote? I happen to live in the
USA if it matters. 

Thanks!
Jeremy
http://www.ixks.com/~sadus