Applause is a receipt, not a bill.
Source: On why he did not respond to applause with an encore; in The Musical Life, Ovation and Triumph, by Irving Kolodin 1958.
-- Artur Schnabel, (Apr 17 1882-1951), Austrian pianist, teacher; His performances and recordings made him a legend and a model of scholarly musicianship to all later pianists including Vladimir Horowitz.