Imitation of Christ

Memento semper finis, et quia perditum non redit tempus, sine sollicitudine, et diligentia nunquam acquires virtutes. Si incipis tepescere, incipis male habere. Si autem dederis te ad fervorem, invenies magnam pacem, et senties leviorem laborem propter Dei gratiam et virtutis amorem. Homo fervidus et diligens ad omnia est paratus. Major labor est resistere vitiis et passionibus, quam corporalibus insudare laboribus. Qui parvos non devitat defectus, paulatim labitur ad majora. Gaudebis semper de vespere, si diem expendes fructuose. Vigila semper te ipsum et quidquid de aliis sit non negligas te ipsum. Tantum proficies, quantum tibi ipsi vim intuleris. Amen.
 

Remember always your end, and how the time which is lost returns not. Without care and diligence you shall never get virtue. If you begin to grow cold, it shall begin to go ill with you, but if you give yourself unto zeal you shall find much peace, and shall find your labour the lighter because of the grace of God and the love of virtue. A zealous and diligent man is ready for all things. It is greater labour to resist sins and passions than to toil in bodily labours. He who shuns not small faults falls little by little into greater. At eventide you shall always be glad if you spend the day profitably. Watch over yourself, stir yourself up, admonish yourself, and howsoever it be with others, neglect not yourself. The more violence you do to yourself, the more you shall profit. Amen.

Imitation of Christ, I, 25:11(10?)