This article is about Tertullian, born in the middle of the 2nd Century A.D. in Carthage.

This article is about Tertullian (c. 160 to 240 A.D.). His relation to Marcion and Montanus (Montanism) is also mentioned. His importance for apologetics, and to show that Jesus Christ is God and man, is also discussed.

A theme for which the writings of Tertullian may be studied with profit is the place of prayer in the life of the church. This study draws attention to and serves as an introduction to a field of study on prayer that has many riches for those who will mine there.

Tertullian is often an unattractive figure to modern people. He had a strict asceticism, and his departure into Montanism does not help to popularize him. This paper focuses on what Tertullian's position was with regard to philosophy (notably irrationalism) and the philosophers of his day.