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.
It is very easy to avoid a compost fire. First, keep your pile small, if you have a lot to compost, make several small piles. Second, turn and water your pile regularly, if your pile is moist (but not soggy) it will not catch on fire. Third, during very hot parts of the year pay more attention to your compost pile. These three simple steps will keep your compost pile producing rich soil, instead of ash.