“Incomparably greater than the power of Sauron, concentrated in the One Ring, Morgoth's power was dispersed into the very matter of Arda: "The whole of Middle-earth was Morgoth's Ring.”
“Embrace The Power of The Ring! Or embrace your own destruction!”
“The real war does not resemble the legendary war in its process or its conclusion. If it had inspired or directed the development of the legend, then certainly the Ring would have been seized and used against Sauron; he would not have been annihilated but enslaved, and Barad-Dûr would not have been destroyed but occupied. Saruman, failing to get possession of the Ring, would in the confusion and treacheries of the time have found in Mordor the missing links in his own researches into Ring-lore, and before long he would have made a Great Ring of his own with which to challenge the self-styled Ruler of Middle-earth. In that conflict both sides would have held hobbits in hatred and contempt: they would not long have survived even as slaves.”
“But I have so little of any of these things! You are wise and powerful. Will you not take the Ring?""No!" cried Gandalf, springing to his feet. "With that power I should have power too great and terrible. And over me the Ring would gain a power still greater and more deadly." His eyes flashed and his face was lit as by a fire within. "Do not tempt me! For I do not wish to become like the Dark Lord himself. Yet the way of the Ring to my heart is by pity, pity for weakness and the desire of strength to do good. Do not tempt me! I dare not take it, not even to keep it safe, unused. The wish to wield it would be too great for my strength. I shall have such need of it. Great perils lie before me.”
“But Sauron was not of mortal flesh, and though he was robbed now of that shape in which had wrought so great an evil, so that he could never again appear fair to the eyes of Men, yet his spirit arose out of the deep and passed as a shadow and a black wind over the sea, and came back to Middle-earth and to Mordor that was his home. There he took up again his great Ring in Barad-dur, and dwelt there, dark and silent, until he wrought himself a new guise, an image of malice and hatred made visible; and the Eye of Sauron the Terrible few could endure.”
“Maedhros laughed saying: 'A king is he that can hold his own or else his title is vain. Thingol does but grant us lands where his power does not run. Indeed Doriath alone would be his realm this day but for the coming of the Noldor. Therefore in Doriath let him reign and be glad that he has the sons of Finwe for his neighbours not the Orcs of Morgoth that we found.”
“One Ring to rule them all, One Ring to find them,One Ring to bring them all and in the darkness bind them.”