We need a language to read a book, and that affects our thought process, as we start thinking like the author and behave in a manner we perceive from the books. Like how someone speaks under the influence of alcohol, books n authors too influence.
Sawdust that is created from cutting natural wood is safe for your compost no matter what kind of tree the wood comes from. Just make sure the wood has not been treated with any chemicals. Another option with sawdust is to try mixing it in with potting soil.
Table 1 shows which common compost materials are high in carbon and which materials are high in nitrogen. Notice that the softer materials, such as fresh grass clippings, tend to be higher in nitrogen than hard materials, such as sawdust.