"Doctor of the Church (Latin doctor "teacher"), also referred to as Doctor of the Universal Church (Latin: Doctor Ecclesiae Universalis), is a title given by the Catholic Church to saints recognized as having made a significant contribution to theology or doctrine through their research, study, or writing.
As of 2020[update], the Catholic Church has named 36 Doctors of the Church. Of these, the 17 who died before the Great Schism of 1054 are also held in high esteem by the Eastern Orthodox Church, although it does not use the formal title "Doctor of the Church" in the same way that Catholics do." - (en.wikipedia.org 16.05.2021)
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