“Once you have acquired the skills, you must test them on an opponent, but in no way should you consider victory or submission to be a cause for shame or pride. Rather, you ought to think, "By what means did I defeat him?" Or, "By what means could have I defeated him?"”
Then you exert and test yourself for a while.
Source: Jixiao Xinshu (1560; 1584), Chapter 14: The Chapter on the Fist Canon and the Essentials of Nimbleness
Help us to complete the source, original and additional information
Qi Jiguang 3
Ming Dynasty general 1527–1588Related quotes
Rafael shows some respect to Israel Vazquez.http://www.boxing24.com/2007/06/marquez-vazquez-2/

Utopia and Violence (1947)
Context: Not only do I hate violence, but I firmly believe that the fight against it is not hopeless. I realize that the task is difficult. I realize that, only too often in the course of history, it has happened that what appeared at first to be a great success in the fight against violence was followed by a defeat. I do not overlook the fact that the new age of violence which was opened by the two World wars is by no means at an end. Nazism and Fascism are thoroughly beaten, but I must admit that their defeat does not mean that barbarism and brutality have been defeated. On the contrary, it is no use closing our eyes to the fact that these hateful ideas achieved something like a victory in defeat. I have to admit that Hitler succeeded in degrading the moral standards of our Western world, and that in the world of today there is more violence and brutal force than would have been tolerated even in the decade after the first World war. And we must face the possibility that our civilization may ultimately be destroyed by those new weapons which Hitlerism wished upon us, perhaps even within the first decade after the second World war; for no doubt the spirit of Hitlerism won its greatest victory over us when, after its defeat, we used the weapons which the threat of Nazism had induced us to develop.

To Raoul Nordling
Dallas, Gregor (2006). 1945: The War That Never Ended https://books.google.pl/books?id=PTEV0CPuhRcC&pg=PA173&hl=pl&sa=X&ved=0ahUKEwiUp-aI4dTfAhWKw4sKHYBJDg8Q6AEILDAA#v=onepage&q&f=false p. 178. Yale University Press. ISBN 9780300119886

Source: "As I Please," Tribune, (24 December 1943)

Shout Magazine, in the issue from August, in the article "Cookin' with Christopher Walken" (2001)