On Natural and Revealed Theology: Collected Essays of Surrendra Gangadean is a collection of published papers and public lectures presented by Dr. Gangadean and edited into essay form.

The main focus of Dr. Gangadean's work is the good as the knowledge of God and the goal of the earth being filled with the knowledge of the glory of God. He argues that for this goal to be achieved, there must first be unity in the church that the world might believe. But, for unity in the church, there must be a shared foundation. Dr. Gangadean has paved the way in showing the philosophical, theological, and historical foundations for the Christian faith with the hope that others, by the grace of God, might build a lasting culture, a City with foundations.