Malak is a good case of this. Exar Kun was a good example of this....Vader and Sidious were examples of this. In a time, the power grows exponentially and the knowledge becomes stagnant once total control is achieved and inner powers bring everthing crashing down. The only logical solution is being content with what you achive.
The dark and light side are not complicated....they are both topographies of ignorance. The Gray are the same. How many times has the number 3 come up in fairy tales and stories through mythology. Gray, the God of the scale, the equal balance, symbolized by the red moon. Light, the god of procreation and judgement, symbolized by the white candle. Dark, the god of Destruction and lust, symbolized by the moon that noone can see. And the people, symbolized by the large pale moon above. These are babalonian referances. They seem to have gotten it right the first time and very well might I add. All hold there catches of knowledge. It is merely a matter of choice...
Do not fear death. Death is all around us. If we show fear it jumps at us faster than lighting, but, if we do not show fear, it casts it's eye upon us gently and guides us slowly into infinity.