Using The Royal Time

Prava corrigere, et recta corroborare, et sancta subliminare omni intentione studeat, et nomen Domini Dei excelsi per multa terrarum spatia diltare guadeat, et catholicae fidei lumen in extremis mundi partibus incendere conetur. Haec est, o dulcissime David, gloria, laus et merces tuae in judicio diei magni, et in perpetuo sanctorum consortio; ut diligentissime populum, excellentiae vestrae Deo comissum, corrigere studeas, et ignorantiae tenebris diu animas obcaecatas ad lumen verae fidei deducere coneris. Nunquam optimis voluntatibus, vel bonis conatibus remuneratio divina deerit: sed qui plus laborat in voluntate Dei, plus mercedis recipiet in regno Dei. Tempus hujus vitae velocitar currit, fugit et non revertitur; ineffabilis vero Dei pietas humano praevidebat generi breviter laborare et aeternaliter coronari. Ideo pretiosa debent esse nobis tempora, ne perdamus per negligentiam quod per bonae vitae exercitium habere poterimus aeternum. Alcuinus, Epistola XLIII Ad Carolum Magnum Source: Migne PL 100.207c-208a

One should strive with every effort to improve the depraved and to strengthen the righteous and to edify the holy, and one should rejoice to spread the name of the Lord God Most High through all the span of the earth, and one should try to bring the light of the Catholic faith to the furthest ends of the earth. This is, O beloved David, glory and praise and reward on the great day of judgement, and the perpetual company of the saints, that you should try to lead to the light of faith those who are blind of soul in the darkness of ignorance. Never does the Divine fail to remunerate the best of wills or good efforts, but he who labours more to do the will of God shall receive more in the kingdom of God. Our time of life quickly runs on, it flies off and it will not return. Yet in truth the ineffable piety of God provides for the brief labour of man an eternal crown. Thus should our time be precious to us, lest we destroy by negligence the eternity which with a good life of exertions we were able to have. Alcuin of York, from Letter 43, To Charlemagne