Jacques Ellul (1912-1994) is a French thinker who has a very significant presence in the subjects developed in both Operative Traditions and The Solar Warrior series, by author Miguel A. Fernandez
In Operative Traditions there are a total of 70 references to Ellul´s work, and in The Solar Warrior series there are 50 references. 

Ellul´s acute perceptions on the influence of technique in modern society are cherished in the former series as a very important standpoint for understanding the true challenges of today. Ellul´s ideas on politics, sociology and theology are still today a precious heritage that demands to be studied and advanced, especially in order to overcome the planetary crisis of our times.