The book of Charles Mackay is a selection of the most outstanding delusions and follies of mankind: from financial pyramids to religious psychoses. It became a classic work about mass mania, crowd behavior and human stupidity. Misconceptions & # 96; and & # 96; the follies & # 96; outlined in the book relate to chronic & # 96; diseases & # 96; humanity. Financial pyramids, corruption of power, falsifications and self-deception of imaginary healers and prophets - all this was, is and will be. This book has been reprinted dozens of times in many countries of the world and has become a tabletop for several generations of financiers, businessmen, politicians and all those who seek to understand mass psychology.