Adding line breaks within lyrics

[Andrew C. Smith]

Hi everyone,

I'm writing a piece where the rhythms of the sung words are free, so a whole 
phrase is attached to a single note. I'm putting my lyrics in " " for each 
note, but they appear on one long line, when I actually want them wrapped to 
the width of the bar. Is there a way to add a line break within the quoted 
lyric, or to set the max width and tell lilypond to wrap the text?

\partI = \lyricmode {
...
\override LyricText #'font-shape = #'italic
\override LyricText #'self-alignment-X = #LEFT
"world's chaos when we seek it water's drifting as slowly out tides toward land 
twice daily"
...
}

later on, 

<<
\voice
\new Lyrics \lyricsto "soprano" { \partI }
\violin
>>

Let me know if maybe there's a better way to do this. I'd like to keep it as 
clean as possible, and also to be able to keep all my lyrics in one variable in 
case I want to split up the file later. Thanks.

Andrew