Friedrich Wieck practice, however, he might not always have lived up to the ideals he described in the book "Piano and Song: How to Teach, How To Learn, and How to Form a Judgment of Musical Performances." When Robert Schumann was living and studying in the Wieck household, he reported seeing Wieck punishing his nine-year-old son, Alwyn, for playing the violin poorly, tearing at his hair and yelling, "You wretch, you scoundrel, is this the way you try to please your father?" Clara seemed unconcerned at the violent scene. Shocked, Schumann wrote in his diary, "Am I among human beings?" Besides the
Friedrich Wieck Marianne, were irreconcilable in large part due to Wieck’s unyielding nature. When his friend Adolph Bargiel, father of Woldemar Bargiel, had an affair with her, she divorced Wieck in 1824. She then married Adolph Bargiel. His second wife, Clementine Fechner – whom he married in 1828 – was twenty years his junior. Clementine was the sister of painter Eduard Clemens Fechner and of experimental psychology pioneer Gustav Fechner. One of the three children she gave birth to, besides Cäcilie and Clemens (1829–1833), who died at the age of four, Marie Wieck was also a concert pianist, although she was not