This is gonna be a basic post cause in the first minute spent on wikipedia I had a major spoiler explode in my face, damn you demons who update this wikihell of spoilers! Whatever happened to spoiler alert, not necessary on the most popular encyclopedia of the world? Call me the Seeker, of Spoiler Alerts!
Richard Cypher, Cypher: a message written in a secret code (can be a good or bad msg, in the matrix, it's bad hehe), an obscure woods guide who would never amount to anything. In other words, obscure li'l you. Anyone can be the Seeker and take up the Hero's Journey. A sort of alchemical metaphorical story for the path of any real Seeker. Check out the Radical Myth podcasts at Radical Change Group.
This is more from the books than the series:
Richard learned to channel his rage using the Sword of Truth, given to him by the wizard Zedd. The Sword of Truth channels Richard's anger into great strength and power, but he can only use the blade to harm those he believes to be truly evil. He also learns to channel love into the Sword. When he does, he can kill anyone, innocent or not - he hates that fact more than the anger.
The Sword of Truth, a great metaphor for "Reason". So Reason can channel Anger into great strength and motivation. And basically the Sword of the good guys is only used in defense. A more interesting metaphor is that we may hurt who we believe we don't like, but usually end up hurting the ones we love much more, so tread wisely on life's path Seeker.
Zedd: "Young people! Everything is black and white, either or!" (Catmas!)
Zedd: Where there is no way, the Seeker will find a path! Lesson number four.
Richard: You said the last one was number four.
Zedd: Number five then!
Richard: ... Are you just making these up?
Meet Kahlan Amnell, a Confessor, she has a gift for knowing and reading people and realizing why they do what they do even if the person himself does not know why. Confessors are a sisterhood that take care of disputes in any village, she listens to both sides who may not lie to a confessor, and then the confessor decides what will be done and that's final. A confessor can also touch anyone and use their power to permanently obliterate the free will of a victim and replacing it with love and subservience to the confessor until either one dies. The power is always present and the confessor has to hold it in at all times. A rather harsh way of good getting rid of evil in the world, maybe a metaphor for any movement trying to rid the world of their perceived evil by their own wrongdoing.
So any obscure person from the most unlikely upbringing, can take up the role of a Seeker, through synchronicity find a few Wizards to learn from (but don't confuse a wizard with a salesman...), be honest (confessor) and face the darkness and lies (Darken Rahl) to find the Truth. See Joseph Campbell's work for more on the Hero's Journey, like the Hero with a Thousand Faces. Check out the Radical Myth podcasts at Radical Change Group. Journey well on your own path Seeker!