At every stage of the process, John reminds his students to be mindful and respectful of the tree’s gift of its life. This also means making practical use of all the parts of the tree, so that none of it is wasted—which in itself would imply that it was waste, or worthless. Kimmerer uses this to remind the reader how they can take this lesson into their own lives, first by being aware of the living things that have given their lives for us to use. This sense of awareness then leads to less mindless consumption: when you respect the gift, you can’t treat it as waste and so are more likely to be careful with it.