“Bluestar blinked. "There are cats who would argue that there should never have been a fifth Clan in the forest at all. Why are there four oaks at Fourtrees, if not to stand for the four Clans?"Firestar gazed up at the massive oak trees, then back at Bluestar. Fury pure as a lighting flash rushed through his body. "Are you mouse-brained?" he snarled. "Are you telling me SkyClan had to leave because there weren't enough trees?”
“Fire will save the Clan...you never understood, did you? Not even when I gave you your apprentice name, Firepaw. And I doubted it myself, when fire raged through our camp. Yet I see the truth now. Fireheart, you are the fire who will save ThunderClan. You will be a great leader. One of the greatest the forest has ever known. You will have the warmth of fire to protect your Clan and the fierceness of fire to defend it. You will be Firestar, the light of ThunderClan." - Bluestar”
“You see, Firestar? I am even more powerful than Starclan, for I have changed the clans in the forest from four to two..."-The Darkest Hour, Page 227”
“You're never been wrong before, Spottedleaf. If StarClan has spoken, then it must be so. Fire will save our Clan. -Bluestar, Into the Wild”
“He paused; a grim silence gripped the whole clearing, broken by a contemptious Rumble from Tigerstar. "Mew away, little kittypet. It won't change anything."Firestar ignored him. "Being deputy wasn't enough," he went on. "Tigerstar wanted to be leader of the clan. He set a trap for Bluestar by the Thunderpath, but my own apprentice strayed into it instead. That's how Cinderpelt came by her crippled leg."A shocked murmer swept through the clearing. Except for Bloodclan, they all knew of Cinderpelt, she was popular even with cats of other clans. Then Tigerstar conspired with Brokentail, the fomer leader of ShadowClan, who was ThunderClan's prisoner," Firestar told the listening cats. "He brought a pack of rogues into ThunderClan camp, and tried to murder Bluestar with his own claws. I stopped him, and when ThunderClan had beaten off the attack we drove him into excile. As a rogue, he slaughtered, Runningwind. Then before we knew what he was up too, he had made himself leader of ShadowClan.”
“Understand that Bluestar does not make this offer lightly if you wish to train with us, we will have to take you into our Clan. You must either live with us and respect our ways, or return to your Twolegplace and never come back. You cannot live with a paw in each world.”