Didn't write it myself but liked it anyway.

Prowess: To seek excellence in all endeavors expected of a knight, martial and otherwise, seeking strength to be used in the service of justice, rather than in personal status.
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 agreement 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 knight was sworn by oath to defend his liege lord and those who depended upon him. Seek always to defend your nation, your family, those to whom you believe worthy of loyalty, the fatherless and the defenseless.
Courage: Being a knight often means choosing the more difficult path, the personally expensive one. Be prepared to make personal sacrifices in service of others, principles, morals and people you value. At the same time, a knight should seek the wisdom to know 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 knight 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 office of knighthood is well done and glorified, helping not only the gentle spoken of but also all who call themselves knights.
Generosity: Be generous in so far as your resources allow; generosity 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 knight, realizing that though the ideals cannot be reached, but it is the quality of striving towards them that 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.