To accomplish this goal, Sauron knew that the One Ring would need to contain an extraordinary amount of power. As such, he concentrated within the Ring a great part of his own fëa (soul). In this way, Sauron's fate became bound to that of the One Ring. If it were damaged or destroyed, so too would be Sauron's strength and power. The One Ring was also known as the Ruling Ring, the Master Ring, the Ring of Power, and Isildur's Bane.