“The life of a monk ought always to be a Lenten observance. However, since such virtue is that of few, we advise that during these days of Lent he guard his life with all purity and at the same time wash away during these holy days all the shortcomings of other times. This will then be worthily done, if we restrain ourselves from all vices. Let us devote ourselves to tearful prayers, to reading and compunction of heart, and to abstinence.
During these days, therefore, let us add something to the usual amount of our service, special prayers, abstinence from food and drink, that each one offer to God “with the joy of the Holy Ghost” (1 Thes 1:6), of his own accord, something above his prescribed measure; namely, let him withdraw from his body somewhat of food, drink, sleep, speech, merriment, and with the gladness of spiritual desire await holy Easter.” — The Rule of St. Benedict