LAHORE:24 April: Managing Director Punjab Curriculum and Textbook Board Abdul Qayyum Monday said book was vital in seeking, imparting and promoting knowledge. Addressing the participants of a walk held on the occasion of the World Book Day, the MD said genuine knowledge depended on books’ study.He said study broadened vision of man and an ignorant man could not make distinction between good and evil. Qayyum said progress of any nation hinged upon knowledge. He stressed the need of inculcating the habit of study in children before going to sleep. About modern psychological troubles, the MD said study of good books kept man away from several problems. The walk started from the PCTB, Gulberg-3 and culminated at Qaddafi Stadium.The news.