Therefore, Debussy's approach to piano was totally different from any other composers where he aimed at freeing the piano from its percussive sound. For him, the piano should sound as if it was instrument as if it has no hammers; the fingers should "penetrate the notes"; and the pedal should give the power for the piano to "breath".
Marguerite Long also emphasizes this:'One must forget that the piano has hammers,' was one of his most frequent sayings. [Long p. 13]