The main title of Pope Pontifex maximus (chief builder of bridges) came from the first Roman priests. Another honorary title Servus Servorum Dei (servant of God’s servants) was adopted by the pope in the 7th century. The third, most proud title “Vicar of Christ” (temporarily acting Christ on Earth) was accepted by the popes after the break with the Byzantine Church.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.