This review discusses two books: "Biological properties of immunoglobulins" and "Relativistic Quantum Fields." The first book, edited by R. A. Good and G. W. Litman, is a multi-authored volume with 16 articles covering various aspects of immunoglobulins. The content is diverse, with a focus on classical immunochemistry problems, particularly the antibody-antigen interaction. The book includes detailed discussions on the structural basis of effector functions, gene duplication in Ig evolution, and atypical immunoglobulins. Despite some errors and a misleading table of contents, it provides valuable insights into the biological properties of immunoglobulins. The second book, by C. Nash, is an excellent introduction to field theory, focusing on the $\lambda \pi^{4}$ theory and quantum electrodynamics (QED). It covers functional differentiation, dimensional regularization, and renormalization constants in QED, making it a useful resource for students and researchers in the field. However, it lacks coverage of non-abelian gauge theories and spontaneous symmetry breaking.This review discusses two books: "Biological properties of immunoglobulins" and "Relativistic Quantum Fields." The first book, edited by R. A. Good and G. W. Litman, is a multi-authored volume with 16 articles covering various aspects of immunoglobulins. The content is diverse, with a focus on classical immunochemistry problems, particularly the antibody-antigen interaction. The book includes detailed discussions on the structural basis of effector functions, gene duplication in Ig evolution, and atypical immunoglobulins. Despite some errors and a misleading table of contents, it provides valuable insights into the biological properties of immunoglobulins. The second book, by C. Nash, is an excellent introduction to field theory, focusing on the $\lambda \pi^{4}$ theory and quantum electrodynamics (QED). It covers functional differentiation, dimensional regularization, and renormalization constants in QED, making it a useful resource for students and researchers in the field. However, it lacks coverage of non-abelian gauge theories and spontaneous symmetry breaking.