19.14 (part) All controversies should be resolved into something which is finally existent. Take the example of enquiry. Before enquiry there are views and counter views, and they are resolved into a verdict which is the truth or the substratum. Likewise debate about existence and non-existence is resolved in substratum, i.e., AtmA.
19.15 Shankaracharya discards the theory of emptiness. The debate whether the perceived duality is non-existent (empty) or not is possible only if it is accepted that there is something which makes the debate possible.