This book is about Transparent Intensional Logic, the brainchild of Pavel Tichy. Three books and around 100 papers on Transparent Intensional Logic have till now seen the light of day since the mid-1960s. So why a book of more than 500 pages now? For two reasons. Firstly, Transparent Intensional Logic is a theory without something like a textbook. Now this is not an actual textbook, if a textbook is a patient introduction garnished with exercises and solutions; nor is it a teach-yourself-in-a-week manual for the uninitiated-but-curious. But we, the three authors, have striven to write an...