Play always as if in the presence of a master.

Think 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.

"We liked it" or "I didn't like it" people say. As if it were nothing higher than to please the people!

In order to compose, all you need to do is remember a tune that nobody else has thought of.

Nature best teaches how to pray, and how to reverence all the gifts the Almighty has given us. She is like a vast outspread handkerchief, embroidered with God's eternal name, on which we may dry alike our tears of sorrow and of joy; she turns weeping into ecstasy, and fills our hearts with speechless, quiet reverence and resignation.

My heart pounds sickeningly and I turn pale... I often feel as if I were dead... I seem to be losing my mind.

Does it not seem as if Mozart's works become fresher and fresher the oftener we hear them?