
„When I am here I do not fast on Saturday; but when I am at Rome I do“
— Ambrose bishop of Milan; one of the four original doctors of the Church 339 - 397
Quoted in "Epistle to Casualanus", XXXVI, section 32, by St. Augustine; translation by J.G. Cunningham
Kontext: 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.