A treatise on the principle of sufficient reason a psychological theory of reasoning, showing the relativity of thought to the thinker, of recognition to cognition, the identity of presentation and representation, of perception and apperception This book, "A treatise on the principle of sufficient reason a psychological theory of reasoning, showing the relativity of thought to the thinker, of recognition to cognition, the identity of presentation and representation, of perception and apperception", by P.F. Fitzgerald, is a replication of a book originally published before 1887. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original as possible. This book was created using print-on-demand technology. Thank you for supporting classic literature.