The Seed of the Guardians
Matcham, Arthur W. The Seed of the Guardians is the story of a highly advanced race of beings from the inner arm of the galaxy that had developed a long life span and submitted to mental control to weed out their violent emotions.
The plan worked and they spread their non-violent philosophy thru their section of the galaxy, over-seeing the other peoples they came in contact with. They were known as the Guardians.
They became so passive that when they came in...