 One important way to motivate non-classical solutions is to appeal to a form of deflationism about truth. Such views take something akin to the T-schema to be the defining characteristic of truth, and as such, not open to modification (see, e.g., Horwich 1990). Most strictly, so-called transparency or ‘see-through’ or ‘pure disquotational’ conceptions of truth (e.g., Field 1994, 2008; Beall 2005) take the defining property of truth to be intersubstitutability of \(A\) and \(\Tr(\left\ulcorner A\right\urcorner)\) in all non-opaque contexts. This makes capture and release, in unrestricted form applying to all sentences of a language, a requirement for truth (at least where we have \(A \vdash A\) or, more strongly, \(\vdash A \rightarrow  A)\).[9]  See the entry on  truth  for further discussion.