St. Bartholomew
One of the twelve Apostles; cited by Dionysius the Areopagite as saying that Theology is both very great and very small, the Gospel both broad and concise.
Preface and Praise of Sacred Scripture
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Chapter I: On the Excellence, Necessity, and Fruit of Sacred Scripture
— Used to say Theology is both very great and very small, the Gospel both broad and concise
"St. Bartholomew used to say that Theology is both very great and very small"