According to Satchidanandendra Saraswati, Shankara employed a method called
Adhyaropa Apavada, in which a property is imposed (
adhyaropa) on Atman to convince one of its existence, whereafter the imposition is removed (
apavada) to reveal the true nature of Atman as nondual and undefinable. For example, Atman, the real "I," is described as
witness, giving "it" an attribute to separate it from non-self. Since this implies a duality between observer and observed, next the notion of "witness" is dropped, by showing that the Self cannot be seen and is beyond qualifications, and only that what is remains, without using any words: ==Literary works of Satchidanandendra Saraswati==