“When I am here I do not fast on Saturday; but when I am at Rome I do”

— Ambrose

Quoted in "Epistle to Casualanus", XXXVI, section 32, by St. Augustine; translation by J.G. Cunningham
Context: When I am here I do not fast on Saturday; but when I am at Rome I do: whatever church you may come to, conform to its custom, if you would avoid either receiving or giving offense.

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Ambrose 10

bishop of Milan; one of the four original doctors of the Ch… 339–397

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