it was at this point , even with all that i had seen , all that i knew , that i thought for a moment that my brother was crazy , that mary was right , that everything he had ever told me was a lie ; that he was more insane than lacond had ever been ; that mary had been fleeing , as she 'd written to her friend , a madman ; that i had been living a life fueled by reports delivered from the insane asylum of duncan shriek 's brain .