If, while at the piano, you attempt to form little melodies, that is very well; but if they come into your mind of themselves, when you are not practising, you may be still more pleased; for the internal organ of music is then roused in you. The fingers must do what the head desires; not the contrary.
Robert SchumannMendelssohn I consider the first musician of the day; I doff my hat to him as my superior. He plays with everything, especially with the grouping of the instruments in the orchestra, but with such ease, delicacy and art, with such mastery throughout.
Robert SchumannThink it a vile habit to alter works of good composers, to omit parts of them, or to insert new-fashioned ornaments. This is the greatest insult you can offer to Art.
Robert Schumann