If I don't practice one day, I know it; two days, the critics know it; three days, the public knows it.
Source: San Francisco Examiner & Chronicle, 18 Apr 71
-- Jascha Heifetz, (Feb 2 1901-1987), Russian-US classical violinist; He was a child prodigy noted for his conscientious musical interpretation, smooth tone, and technical proficiency; considered the best of the century.