Tractatus Logico-Philosophicus is the latin title of Wittgenstein’s first and only work published within his lifetime. It translates roughly to A Treatise on Logic and Philosophy.
The stance then is that of logic.
I do not agree that logic is the best place to start. Logic, to me, seems to be an activity of the mind. And the mind is physical object take performs such processes. To me, place to start is ontology and then epistemology.
Someone commented in a previous post that it is ironic that one must use logic to even start to ask ontological and epistemological questions. I agree. And that tells us something about the inescapability of the act of thinking in order to get to the understanding. Logic, in other words, is a physical act. Logic cannot occur without the availability of the body or mind. This extends to knowledge (the epistemological act) as well. Logic and knowledge do not exist without a mind perform these acts. When the last mind extinguishes form this world so too does logic and knowledge. What continues to remain is the physical world, the reality. And logic and knowledge will restart when another mind comes into (for lack of a better word) being.