This book contains two advanced expositions on the development of higher insight knowledge by the renowned Burmese scholar monk and meditation master Ledi Sayadaw. The expositions deal with topics such as Dependent Origination, Kamma, Causality, Nibbana, etc., and are intended for those who are familiar with the works of the Ledi Sayadaw. The Manual of the Path of Higher Knowledge (Vijj magga D pan ) has never been published in English translation, while The Manual of Light(Alin-Kyan) has not been published in its entirety until now.