What does it mean to be Samurai?

http://www.youtube.com/watch?v=qM1irR1Svx0&feature=PlayList&p=3880AE1769BD7BA1&playnext_from=PL&playnext=1&index=38

They say Japan was made by a sword. They say the old gods dipped a coral blade into the ocean, and when they pulled it out four perfect drops fell back into the sea, and those drops became the islands of Japan. I say, Japan was made by a handful of brave men. Warriors, willing to give their lives for what seems to have become a forgotten word: Honor.

They are an intriguing people. From the moment they wake they devote themselves to the perfection of whatever they pursue. I have never seem such discipline. I am surprised to learn that the word Samurai means, 'to serve', and that Katsumoto believes his rebellion to be in the service of the Emperor.

Winter, 1877. What does it mean to be Samurai? To devote yourself utterly to a set of moral principles. To seek a stillness of your mind. And to master the way of the sword