The Ordeal of Gilbert Pinfold by Evelyn Waugh. Probably the most accurate description of a paranoid episode in world literature. Very funny also, as paranoid episodes often are. The Mulamadhyamakakarika by Nagarjuna. Use any of these arguments before a Grand Jury and you will be cited for contempt of court for sure.
Skepticism is the intellectual foundation of solipsistic nihilism.
A Treatise Concerning Human Nature by David Hume. An Enquiry Concerning Human Understanding by David Hume. The g Factor by Arthur Jensen. Unfortunately, what this book will demonstrate to most people is that they don't have enough g to read it. Even a real smarty-pants like myself usually gets all worn out after two or three typical paragraphs.