Has anyone read "A NEW EARTH" by Eckhart Tolle. I'm having problems understanding one of the pages!?

The page is on pg. 22: If evil has any reality---and it has a relative, not an absolute, reality---this is also its definition: complete identification with form--- physical forms, thought forms, emotional forms.This results in a total unawareness of my connectedness with the whole, my intrinsic oneness with every "other" as well as with the Source. The forgetfulness is original sin, suffering, delusion. When this delusion of utter separateness underlines and governs whatever I think, say, and do, what kind of world do I create? To find the answer to this, observe how humans relate to each other, read a history book, or watch the news on television tonight. If the structures of the human mind remain unchanged, we will always end up re-creating fundamentally the same world, the same evils, the same dysfunction.-------------------I understand the last 2 sentences but not before that. I want good answers not some "Dont read A NEW EARTH because its new age stuff." or" That book is the devils" I dont care about anyones opinions right I just want to understand this page.