Dark Side of the Force
The Force, being an energy field, has opposing sides which normally balance each other. The Dark Side of the Force is the more seductive of the two, for its power and strength are easily obtained by the apprentice. However, the Dark Side is a cruel master, for in return for its ease of initiation, it continually drains its servants' life-energy. Among the highest achievements in the mastery of the Dark Side is the succession from student to master. While this is also true of the Light Side, the Dark Side requires that the student utterly destroy his master to prove his abilities.