The literary activity of Pesch began in 1876. He contributed to
Philosophia Licensis;
Institutiones philosophiæ naturalis (1880);
Institutiones logicales (1888);
Institutiones psychologicæ (1896–98). The last fifteen years of his life were devoted entirely to writing and to the ministry. Treatises were:
Weltphänomenon (1881);
Welträtsel (1884),
Seele und Leib (1893), and
Christliche Lebensphilosophie (1895). The last work reached its fourth edition with three years. Besides scholarly writing, he published popular philosophical and
Apologetic articles and pamphlets. The most important of these were the articles published in the "Germanica" above the pseudonym "Gottlieb"; they were later arranged in three volumes,
Briefe aus Hamburg (1883),
Der Krach von Wittenburg (1889), and
Wittenberg und Rom (1889), arguing against common criticisms of the Catholic Church. His most popular book was
Das Religiöse Leben, of which thirteen large editions appeared. ==References==