"Deductive Logic" is a classic manual on deductive logic by the famous author St. George William Joseph Stock. In the book, the author explains in detail the basic principles of logical thinking, using examples and tasks to consolidate the acquired knowledge. Readers will be able to master the skills of mental analysis and argumentation that are essential for making sound conclusions and making informed decisions. Deductive Logic is an excellent addition for those interested in philosophy, mathematics, or psychology, as well as for anyone seeking to develop their thinking and analytical skills.