Discrimination: used in the sense of 'recognizing and understanding the difference between one thing and another', where the USE of the word "discrimination" is positive, (but listener's reactions to the word are up to you).

Power and Corruption: Power in the physical sense, like electricity or magnetic forces-- what 'corrupts' them, and can /that/ be harnessed as an alternative energy source? At what cost to the users? (including metaphysical costs...)