“But most of all is the degree of infectiousness of art increased by the degree of sincerity in the artist. As soon as the spectator, hearer, or reader feels that the artist is infected by his own production, and writes, sings, or plays for himself, and not merely to act on others, this mental condition of the artist infects the receiver; and contrariwise, as soon as the spectator, reader, or hearer feels that the author is not writing, singing, or playing for his own satisfaction - does not himself feel what he wishes to express - but is doing it for him, the receiver, a resistance immediately springs up, and the most individual and the newest feelings and the cleverest technique not only fail to produce any infection but actually repel.”