Letter XXVI. To Guy, bishop of Lausanne (Circa A.D. 1130)
You have undertaken great things; you have need of courage. You have become a watcher for the house of Israel; you have need of prudence. You are a debtor both to the wise and unwise; you have need of righteousness.
Lastly, you have, above all, need of temperance and self-control, so that one who has preached to others may not become (which may God forbid!) a reprobate.
Manum vestram misistis ad fortia, opus est fortitudine. Speculator domui Israel factus estis; opus est prudentia. Sapientibus et insipientibus debitor estis, opus est justitia. Postremo maxime temperantia opus est: ne qui aliis praedicat, ipse (quod absit) reprobus fiat.