A small but interesting quote from the Chris Claremont introduction to the Frank Miller run of Wolverine
"That the essence of Wolvie’s character was a "failed samurai." To a samurai, duty is all, selfless service the path to their ultimate ambition, death with grace. Every facet, every moment of their lives is absolutely under control. Wolverine , however is a almost a primal life force, total beyond control , as graceless as can be"