" I relized it for the first time in my life there is nothing but mystery in the world how it hides behind the fabric of our poor browbeat days, shining brightly, and we dont eve know it" chapter 2

Lily is commenting on how we fail to see the beautiful mysteries of the world because we are so worn out by our regular days. We get beat down by the stresses of everyday life that we cease to see the magic and wonder in life that takes place before our eyes.