Answer the question at the end by quoting:

Robert Schumann (; 8 June 1810 - 29 July 1856) was a German composer and an influential music critic. He is widely regarded as one of the greatest composers of the Romantic era. Schumann left the study of law, intending to pursue a career as a virtuoso pianist. He had been assured by his teacher Friedrich Wieck, a German pianist, that he could become the finest pianist in Europe, but a hand injury ended this dream.
During Eastertide 1830, he heard the Italian violinist, violist, guitarist, and composer Niccolo Paganini play in Frankfurt. In July he wrote to his mother, "My whole life has been a struggle between Poetry and Prose, or call it Music and Law." By Christmas he was back in Leipzig, at age 20 taking piano lessons from his old master Friedrich Wieck, who assured him that he would be a successful concert pianist after a few years' study with him.  During his studies with Wieck, it has been claimed that Schumann permanently injured a finger on his right hand. Wieck claimed that Schumann damaged his finger by the use of a mechanical device designed to strengthen the weakest fingers, a device which held back one finger while he exercised the others. This claim has been discredited by Clara Schumann, who said that the disability was not due to a mechanical device, and Robert Schumann himself refers to it as "an affliction of the whole hand". Some have argued that, as the disability appeared to have been chronic and have affected the hand, and not just a finger, it was unlikely to have been caused by a finger strengthening device.  Schumann abandoned the idea of a concert career and devoted himself instead to composition. To this end he began a study of music theory under Heinrich Dorn, a German composer six years his senior and, at that time, conductor of the Leipzig Opera. About this time Schumann considered composing an opera on the subject of Hamlet.

How did this affect his ability to play the piano and other instruments?

Schumann abandoned the idea of a concert career and devoted himself instead to composition. To this end he began a study of music theory under Heinrich Dorn, a German



Answer the question at the end by quoting:

Keith Carradine was born in San Mateo, California. He is the son of actress and artist Sonia Sorel (nee Henius), and actor John Carradine. His paternal half-brothers are Bruce and David Carradine, his maternal half-brother is Michael Bowen, and his full brothers are Christopher and Robert Carradine. His maternal great-grandfather was biochemist Max Henius, and his maternal great-grandmother was the sister of historian Johan Ludvig Heiberg.
Keith Carradine met Shelley Plimpton in the Broadway musical Hair. She was married to actor Steve Curry, albeit separated, and she and Carradine became romantically involved. After Carradine left the show and was in California he learned that Shelley was pregnant and had reunited with Curry. He met his daughter, Martha Plimpton, when she was four years old, after Shelley and Steve Curry had divorced. He said of Shelley, "She did a hell of a job raising Martha. I was not there. I was a very young man, absolutely terrified. She just took that in, and then she welcomed me into Martha's life when I was ready."  Carradine married Sandra Will on February 6, 1982. They were separated in 1993, before Will filed for divorce in 1999. The couple had two children: Cade Richmond Carradine (born July 19, 1982) and Sorel Johannah Carradine (born June 18, 1985). In 2006, Will pleaded guilty to two counts of perjury for lying to a grand jury about her involvement in the Anthony Pellicano wire tap scandal. She hired, then became romantically involved with Pellicano after her divorce from Carradine. According to FBI documents, Pellicano tapped Keith Carradine's telephone and recorded calls between him and girlfriend Hayley Leslie DuMond at Will's request, along with DuMond's parents. Carradine filed a civil lawsuit against Will and Pellicano which was settled in 2013 before it went to trial.  On November 18, 2006, Keith Carradine married actress Hayley DuMond, in Turin, Italy. They met in 1997 when they co-starred in the Burt Reynolds film The Hunter's Moon.

Who were his parents?