In the thread on "what should I excpect in Aikido" somebody expressed the opinion that Judo entailed going with the flow, or moving with your opponents energy. While these are real aspects of some Judo fighter's game, they are not the definitive basis of judo's principles. The most famous of Jigoro Kano's sayings was: " Maximum efficient use of mind and body." This is proly the best single phrase that defines the sport. Judo, imo, can be broken down into two categories, Big man and Little man. Please feel free to contribute any ideas on this. Even if you're not a Judoka.