my crazy cat

My cat I am sure is losing it. He goes around my place chasing things that do not exist. he tries to climb up the walls to of course no avail. He has leapt so many times into the air, came down hit his head; knocked himself out. He for some reason continues to do it lord knows why.
He does not play in boxes but chews boxes. He enjoys beyond a shadow eating any kind of paper work he can get hold of and forget . He sleeps under the covers like a human; on his back with the covers up.
he is so lucky he is handsome tan with rings of copper in his eyes a very unique looking cat. He is very loving and I am sure grateful to be off the streets. He left once ,came back and doesn't try to leave anymore. I guess he has chosen his life.