The Patthanuddesa Dipani is Ledi Sayadaw's treatment of one of the most difficult and complex subjects of Theravada Buddhist thought -- the philosophy of conditional relations. The Patthana, the seventh and last book of the Abhidhamma Pitaka, works out the relations in six large volumes. In the present slim volume the Venerable Ledi Sayadaw has extracted the essential principles underlying this vast system and explained them concisely but comprehensively, with lucid illustrations for the Patthana's twenty-four conditional relations.
