ISBN-13: 9780367422646 / Angielski / Twarda / 2019 / 100 str.
ISBN-13: 9780367422646 / Angielski / Twarda / 2019 / 100 str.
Originally published in 1934. This fourth edition originally published 1954. This book discusses the habit of sound reasoning which is acquired by consciously attending to the logical principles in order to apply them to test the soundness of arguments. Stress is laid upon the importance of language.