Calf's head & union tale Book

I read a little bit of this book almost every day. I can usually find a sentence or more that resonates with me on that day. The ancients believed that this book was a representation of the voices of spirits. It is thousands of years old. I don't know how to use divination with it, but I feel like it is a reliable friend who always gives good advice pertinant to my situation.
My favorite line today is, "Everything that gives light is dependent on something to which it clings, in order that it may continue to shine" (119, trigram 30, The Clinging, Fire). This is how I feel about books. Books are the things to which I cling and which allow me to contribute any portion of light to the world (ie. not dwell entirely in despair and darkness).