This book contains the English translation of Mulla Sadra's treatise "Primacy of Actualization of the Being" (Asalat-e-Jail-ul-Wajood). In additions to this, it also contains English translation of different texts on "Primacy of the Being" selected from the following two books/treatises authored by Mulla Sadra.1.Divine Witnesses (Shwahid-e-Rabawbia) 2.Commentary on Quran (Tafseer-e-Quran) Moreover, this book also contains abridged translation of some texts on "Primacy of the Being" selected from the following three books/treatises of Mulla Sadra:1.The Four Journeys (Asfaar-e-Arbaa) 2.The Holy Queries (Masail-e-Qudsia)3.The Keys to the Hidden World (Mfateeh-ul Ghaib)