Beauty ~ Tegan and Sara --
I relate to certain lyrics very well, and the line "I want power in my words, I want passion in my eyes, and when I wake up, I want life to be a surprise" is my favorite quote from anything, music or otherwise.

Not With You ~ Tegan and Sara --
This is my 'I'm depressed song'. Mostly because of the line "Around this world, will I be enough?"

Well, actually, I guess I relate and am defined by pretty much every Tegan and Sara song. Their lyrics are great.