The poltergeist is speaking out of confusion, frustration,and anger. He initially asks,Why didn't you tell me there was danger?Which immediately establish that he is in some sort of argument with another person.Followed by Why didn't you warn me? although it is unknown who he is talking to, we can assume that it is someone that has some sort of relationship since he obviously expected the person to warn him. He then makes a comparison with another group of people, the Ladies who knew what he himself wanted to know by rreading novels. This comparison shows that he wanted to know of these tricks but never did and eventually blames the person by saying I never had the chance of discovering in that way and you did not help me!