"Jiu-jitsu practice differs from either boxing or Western systems of wrestling in that it proceeds on the assumption that in ordinary life, should one be so unfortunate as to become involved in a personal encounter, one would usually be fully dressed. For that reason many, though not all, of the tricks taught necessitate holds upon portions of one's advesary's clothing - sleeves, lapels, belt, etc. - in contradistinction to say catch-as-catch-can or Greco Roman wrestling, in which the contestants, if not naked, wear such close-fitting garments that it is impossible to clutch them. It would, however, be a grave error to suppose that the jiu-jitsu man is necessarily at a loss even when the antagonist is nude from the waist up."
Professor Yukio Tani, circa 1910.
Winner of over 500 challenge matches in London after the catch as catch can and greco roman wrestlers refused to believe that jiujitsu was real from mere demonstrations