The light can get in, the light can get out

i am an open book, i am a closed book. You couldnt crack me, you wont, maybe if we’re alike you can crack me in a little, but just like how a light cracks in a window, when my vessel is slowly cracking open, or maybe its a looking glass, itll probably reflect back. I dont think you can, maybe you will try, and those i trust may come close, but then again, it will probably reflect back.