In the late 1960s to early 1970s the concept of combining the elements of multiple martial arts was popularized in the west by Bruce Lee via his system philosophy of Jeet Kune Do. Lee believed that "the best fighter is not a Boxer, Karate or Judo man. The best fighter is someone who can adapt to any style, to be formless, to adopt an individual's own style and not following the system of styles." In 2004 UFC President Dana White would call Lee the "father of mixed martial arts" stating: "If you look at the way Bruce Lee trained, the way he fought, and many of the things he wrote, he said the perfect style was no style. You take a little something from everything. You take the good things from every different discipline, use what works, and you throw the rest away".
Jeet Kune Do (also "Jeet Kun Do", "JKD," or "Jeet Kuen Do") is a hybrid martial arts system and life philosophy founded by martial artist Bruce Lee in 1967 with direct, non classical and straightforward movements. The system works on the use of different 'tools' for different situations. These situations are broken down into ranges (Kicking, Punching, Trapping and Grappling), with techniques flowing smoothly between them. It is referred to as a "style without style". Unlike more traditional martial arts, Jeet Kune Do is not fixed or patterned, and is a philosophy with guiding thoughts. It was named for the concept of interception, or attacking your opponent while he is about to attack. However the name Jeet Kune Do was often said by Bruce Lee to be just a name. He himself often referred to it as "The art of expressing the human body" in his writings and in interviews. Through his studies Bruce came to believe that styles had become too rigid, and unrealistic. He called martial art competitions of the day "Dry land swimming". He believed that combat was spontaneous, and that a martial artist cannot predict it, only react to it, and that a good martial artist should "Be like water" and move fluidly without hesitation."
Learn the principle, abide by the principle, and dissolve the principle. In short, enter a mold without being caged in it. Obey the principle without being bound by it. LEARN, MASTER AND ACHIEVE!!!
Bruce Lee