Rubinstein himself insisted that far more important than extensive practice was 147;learning about life and love and art and all the other wonderful things in the world148; in order to have something worth expressing. She fought to secure eight armed Bolivian Nationalвs. First published as "Lass froh uns sein" ("Let us be joyful"). Spaethling, Robert (2000) Mozarts letters, Mozarts life selected letters.