Logic. Textbook for secondary school, 1954

The term "logic" comes from the ancient Greek "Logos", which means "the word in which the thought is expressed." Correctly build your speech, be able to competently and intelligibly convey your judgments to others - an art that can and should learn. In the future, this skill will help to build relationships with other people both in everyday life and in the professional field. How is thinking related to the language? How does the process of cognition begin? How does thinking differ from sensations and perceptions? What is a concept? What parts does the judgment consist of? What are the basic laws of logical thinking? What is a conclusion? What is the essence of the analogy? When does the hypothesis become a theory? What is a "absurd information"? This publication is an original text of a textbook issued in 1954 and approved by the Ministry of Education of the RSFSR. The manual is intended for schoolchildren, teachers, as well as for everyone who wants to increase their sociability and master the art of impeccable