"If you attach yourself to gross energies - loving this person, hating that clan, rejecting one experience or habitually indulging in another - then you will lead a series of heavy, attached lives. This can go on for a very long and tedious time."

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You must do whatever you think is best. But I know one thing. Nothing meant more to Graystripe than your friendship and his Clan. Even when he was in RiverClan, he longed to go home. He would want to see ThunderClan as strong as it could possibly be, even if that meant accepting that he's not coming back.

— Erin Hunter