Lauren Oliver said this quote

Her eyes are shining; she’s excited now, ready to go. For a moment, standing in the fuzzy haze of sunlight still penetrating the blinds, she appears to be glowing, as though lit up by some internal flame. And now I know why they invented words for love, why they had to: It’s the only thing that can come close to describing what I feel in that moment, the baffling mixture of pain and pleasure and fear and joy, all running sharply through me at once.