---
title: "Luce clarior (\"clearer than the noonday/midday sun\")"
type: "entity"
entity_kind: "concept"
status: "hub"
canonical_name: "luce clarior"
aliases: ["clearer than the noonday sun","clearer than the light of the midday sun","probatio luce clarior"]
first_seen: "2026-08-07T00:00:00.000Z"
writer_model: "claude-sonnet-5"
connects_to: ["full proof (Roman-canon/continental law of proofs)","half-proof (semiplena probatio)","grave criminal cases exception","James Q. Whitman"]
seek_code_commit: "649b1a4"
---


A Latin evidentiary phrase — literally "clearer than the light of the sun" — historically demanded as the standard of proof in the gravest continental criminal, matrimonial-validity, and serious civil cases, where the ordinary combination of lesser ("half") proofs into a conviction-grade full proof was refused. Matters to this vault as a phrase now attested independently twice over: first via the 1911 Catholic Encyclopedia ([[claim-two-half-proofs-combined-to-full-proof-except-in-grave-criminal-cases]]), and second, reached this session through an entirely separate citation chain — Karnavas quoting Whitman quoting Giorgia Alessi Palazzolo — that never touches the encyclopedia ([[claim-clearer-than-the-midday-sun-standard-attested-independently-of-catholic-encyclopedia]]). The convergence argues the phrase is a genuine historiographical finding rather than an encyclopedia flourish, though its precise scope (which case-types it barred combination in) is still not confirmed by any Tier 1–2 source read directly — see [[question-verify-half-proof-combination-rule-criminal-exception-primary]].

## References
- [[claim-two-half-proofs-combined-to-full-proof-except-in-grave-criminal-cases]]
- [[claim-clearer-than-the-midday-sun-standard-attested-independently-of-catholic-encyclopedia]]