The following list is an excellent summary of the European Code of Chivalry for the modern day reader. It originated on a site related to the Society for Creative Anachronism (SCA). I've modified it only slightly to refer to a martial artist instead of a knight.

Prowess: Seek excellence in all endeavors expected of a martial artist, martial and otherwise, seeking strength to be used in the service of justice, rather than in personal aggrandizement.

Justice: Seek always the path of 'right', unencumbered by bias or personal interest. Recognize that the sword of justice can be a terrible thing, so it must be tempered by humanity and mercy. If the 'right' you see rings agrees with others, and you seek it out without bending to the temptation for expediency, then you will earn renown beyond measure.

Loyalty: Be known for unwavering commitment to the people and ideals you choose to live by. There are many places where compromise is expected; loyalty is not amongst them.

Defense: The ideal martial artist defends his “liege lord” and those who depended upon him. Seek always to defend your nation, your family, and those to whom you believe worthy of loyalty.

Courage: Being a martial artist often means choosing the more difficult path, the personally expensive one. Be prepared to make personal sacrifices in service of the precepts and people you value. At the same time, a martial artist should seek wisdom to see that stupidity and courage are cousins. Courage also means taking the side of truth in all matters, rather than seeking the expedient lie. Seek the truth whenever possible, but remember to temper justice with mercy, or the pure truth can bring grief.

Faith: A martial artist must have faith in his beliefs, for faith roots him and gives hope against the despair that human failings create.

Humility: Value first the contributions of others; do not boast of your own accomplishments, let others do this for you. Tell the deeds of others before your own, according them the renown rightfully earned through virtuous deeds. In this way the role of martial artist is well done and glorified, helping not only the gentle spoken of but also all who call themselves martial artists.

Largesse: Be generous in so far as your resources allow; largesse used in this way counters gluttony. It also makes the path of mercy easier to discern when a difficult decision of justice is required.

Nobility: Seek great stature of character by holding to the virtues and duties of a martial artist, realizing that though the ideals cannot be reached, the quality of striving towards them ennobles the spirit, growing the character from dust towards the heavens. Nobility also has the tendency to influence others, offering a compelling example of what can be done in the service of rightness.

Franchise: Seek to emulate everything I have spoken of as sincerely as possible, not for the reason of personal gain but because it is right. Do not restrict your exploration to a small world, but seek to infuse every aspect of your life with these qualities. Should you succeed in even a tiny measure then you will be well remembered for your quality and virtue.