This document discusses the complex relationship between language ideology and language practice. It begins by noting that ideology and practice are often viewed as separate entities, but some scholars see them as mutually dependent. It then examines different definitions of language ideology, including supra-linguistic ideology (about language in general), inner-linguistic ideology (within specific languages), and language policy (about individual languages). The document also discusses how social indexical theory views individuals' choices in language variation and change as key to the relationship between ideology and practice. Overall, it argues that ideology and practice shape each other in complex ways.