“Criticism does not disturb me, for I am my own severest critic. Always in my playing I strive to surpass myself, and it is this constant struggle that makes music fascinating to me.”
Heifetz official web site http://www.jaschaheifetz.com/about/quotes.html
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Jascha Heifetz 11
Lithuanian violinist 1901–1987Related quotes

“People have doubted me and criticized me my whole life, and that's why I'm the way I am.”
Nancy Gay (October 26, 2000) "The Many Moods of Owens - Why talented receiver does things his own way", San Francisco Chronicle, p. C1.

In the House of Commons (18 April 1947), cited in The Oxford Dictionary of Political Quotations (1996), Jay, Oxford University Press, p. 93.
Post-war years (1945–1955)

“Criticize me for my bad taste, in hindsight, I agree.”
"Chinese Whiskers," FAQ #18: "Did Cat Stevens Say, ‘Kill Rushdie!’?," Mountain of Light http://www.mountainoflight.co.uk/talks_cw.html (undated)
Context: In 1989, during the heat and height of the Satanic Verses controversy, I was silly enough to accept appearing on a program called Hypotheticals which posed imaginary scenarios by a well-versed (what if…?) barrister, Geoffrey Robertson QC. I foolishly made light of certain provocative questions. When asked what I’d do if Salman Rushdie entered a restaurant in which I was eating, I said, “I would probably call up Ayatollah Khomeini”; and, rather than go to a demonstration to burn an effigy of the author, I jokingly said I would have preferred that it'd be the “real thing”.
Criticize me for my bad taste, in hindsight, I agree. But these comments were part of a well-known British national trait; a touch of dry humor on my part. Just watch British comedy programs like "Have I Got News For You" or “Extras”, they are full of occasionally grotesque and sardonic jokes if you want them! … Certainly I regret giving those sorts of responses now. However, it must be noted that the final edit of the program was made to look extremely serious; hardly any laughs were left in and much common sense was savagely cut out. Most of the Muslim participants in the program wrote in and complained about the narrow and selective use of their comments, surreptitiously selected out of the 3-hour long recording of the debate. But the edit was not in our hands. Balanced arguments were cut out and the most sensational quotes, preserved.
“Silence is the severest criticism.”
Often misquoted as "Silence is sometimes the severest criticism."
Source: Notes of Thought (1883), p. 57
As quoted in "He Arranges, Composes, Performs: Fischer: A Renaissance Man Of Music" http://articles.latimes.com/1987-05-14/entertainment/ca-8949_1_clare-fischer.
<center><sup>✱</sup> The parenthetical addition is Zan Stewart's; exactly what it's replacing – whether simply filling a space, or replacing an unintelligible word or two – is not revealed.</center>

2001

“Do not hesistate to attack me, criticize me, if I do wrong in my job. It is your duty.”
Philstar, Duterte to media: You can criticize me as long as it’s true https://www.philstar.com/headlines/2016/09/11/1622603/duterte-media-you-can-criticize-me-long-its-true (September 2016)
On criticism