The book "Differential Equations and Dynamical Systems" by Lawrence Perko is a comprehensive textbook that deals with the role of mathematics in the physical and biological sciences. It highlights the increasing importance of mathematical concepts and techniques across various scientific disciplines and promotes an understanding of both modern and classical methods of applied mathematics. The publication is part of the "Texts in Applied Mathematics" series, which aims to meet current and future demands in teaching and research. The book is aimed at students in advanced undergraduate and early graduate studies, providing a solid foundation for the development of new courses in this dynamic and ever-evolving field of mathematics. It addresses both theoretical and practical aspects and enhances the understanding of the application of differential equations and dynamical systems in various scientific contexts.