Letter 9

Hilary of RomeUnknown|pope hilary
From: Hilary (later Pope), archdeacon of Rome
To: Victorius of Aquitaine, computist
Date: ~456 AD
Context: Pope Hilary's letter 2 — written while Hilary was still archdeacon of Rome, addressing Victorius of Aquitaine on the disputed question of the Easter computation, where the Latin and Greek tables gave different results.

Hilary, archdeacon of the Roman church, to the learned Victorius, greetings.

The question of the Easter computation is one that should not, in principle, divide Christians — and yet the divergence between the Roman and Alexandrian tables has created practical difficulties that I have been asked to address.

The problem you know better than I do: the two tables give different dates for Easter in certain years, and the divergence is a source of embarrassment when Eastern and Western Christians observe the feast on different days, or when a community has access to both tables and does not know which to follow.

I write to you as someone who has studied the astronomical and mathematical basis of the computation more carefully than most, to ask whether you can produce a unified table that resolves the divergence — one that takes account of both traditions and establishes a clear and defensible basis for a single Easter date applicable throughout the church.

This is a practical and not merely theoretical project, and it is one that the Bishop of Rome wishes to see addressed. Whatever assistance or authorization you need to complete the work, write to me and I will provide it.

Hilary, archdeacon of Rome

Modern English rendering for readability. See the 19th-century translation or original Latin/Greek for scholarly use.