▁four ▁languages . ▁ ▁His ▁second ▁book ▁was ▁A ik ido ▁and ▁W ords ▁of ▁Power : ▁The ▁Sac red ▁S ounds ▁of ▁the ▁Kot ot ama ▁which ▁discuss es ▁the ▁sounds ▁of ▁kot ot ama ▁in ▁the ▁practice ▁of ▁a ik ido . ▁The ▁five ▁v ow els ▁represent ▁various ▁dimensions ▁and ▁stages ▁of ▁aw aren ess , ▁whose ▁different ▁powers ▁are ▁revealed ▁through ▁a ik ido ▁practice . ▁G le ason ▁presents ▁physical ▁rout ines ▁that ▁provide ▁an ▁introduction ▁into ▁the ▁Kan agi , ▁Sug aso , ▁and ▁Fut on or ito ▁levels ▁of ▁spiritual ▁development . ▁G le ason ▁notes ▁that ▁A ik ido ▁is ▁often ▁being ▁approached ▁as ▁a ▁purely ▁physical ▁discipline , ▁but ▁it ▁is ▁a ▁truly ▁prof ound ▁spiritual ▁vehicle ▁for ▁those ▁who ▁approach ▁it ▁with ▁sin cer ity ▁of ▁purpose . ▁ ▁G le ason ▁self - pub lished ▁a ▁ 2 0 0 8 ▁DVD ▁entitled ▁A ik ido ▁and ▁Japanese ▁S word ▁that ▁demonstr ates ▁the ▁sword ▁movements ▁that ▁under lie ▁many ▁A ik ido ▁techniques ▁and ▁how ▁this ▁is ▁an ▁essential ▁element ▁to ▁understanding ▁mart ial ▁practice . ▁ ▁References ▁ ▁External ▁links ▁ ▁Sh ob u ▁A ik ido ▁of ▁Boston ▁ ▁A ik ido ▁School s ▁of ▁U es hib a ▁ ▁Inter view ▁with ▁William ▁G le ason ▁ ▁William ▁G le ason ▁and ▁Dan ▁H arden ▁in ▁Hawai i ▁ ▁Category : 1 9 4 3 ▁birth s ▁Category : L iving ▁people ▁Category : American ▁a ik id