Imitation of Christ

Noli confidere super amicos et proximos, nec in futuris salutem tuam differas, quia citius obliviscentur tui homines, quam existimas. Melius est nunc tempestive providere et aliquid boni præmittere, quam super aliorum auxilio sperare. Si non es pro te ipso sollicitus modo, quis erit sollicitus pro te in futuro. Nunc tempus est valde prætiosum, sed proh dolor, quod hoc inutilius expendis, in quo promereri vales, unde æternaliter vivas. Veniet quando unam diem seu horam pro emendatione desiderabis, et nescio, an impetrabis. 

Trust not your friends and kinsfolk, nor put off the work of your salvation to the future, for men will forget you sooner than you think. It is better for you now to provide in time, and to send some good before you, than to trust to the help of others. If you are not anxious for yourself now, who do you think will be anxious for you later? Now the time is most precious. Now is the accepted time, now is the day of salvation. But, alas, that you do not spend well this time, wherein you might lay up treasure which could profit you everlastingly. The hour will come when you will desire one day, yea, one hour, for amendment of life, and I know not whether you will obtain it.

Imitation of Christ, I, 23:5