 Wagner 's early correspondence with Meyerbeer , up to 1846 , is <unk> <unk> . However , from the early 1840s , as Wagner developed <unk> and Lohengrin , his ideas on opera increasingly diverged from <unk> standards ; even in 1843 Wagner had written to Schumann condemning Meyerbeer 's work as ' a striving after superficial popularity ' . During 1846 Meyerbeer turned down Wagner 's application for a loan of 1 @,@ 200 <unk> , and this may have marked a turning point . 
