We live in a world in which the fight for the material is omnipresent. We fight to obtain everything material but no matter how much we are never satisfied due to the fact that we always want something that we do not know what it is but that causes us to feel empty and in need. This emptiness can only be filled by seeking Allah swt. The present book is a collection of lectures about dua delivered by Ayatollah Muhammad Taqi Misbah Yazdi. It consists of four parts. The first part concentrates on the importance of supplication in general. The other three parts deal in detail about Dua al-Iftitah, Dua Abu Hamza at-Thumali and Dua Makarim al-Akhlaq.