6 I say all this not in disparagement of your good works or because I wish to under-rate your generosity in almsgiving, but because I do not wish you to be a monk among men of the world and a man of the world among monks. I shall require every sacrifice of you for I hear that your mind is devoted to the service of God. If some friend, or follower, or kinsman tries to combat this counsel of mine and to recall you to the pleasures of a handsome table, be sure that he is thinking less of your soul than of his own belly, and remember that death in a moment terminates both elegant entertainments and all other pleasures provided by wealth.
Within the short space of twenty days you have lost two daughters, the one eight years old and the other six; and do you suppose that one so old as you are yourself can live much longer? David tells you how long a time you can look for: “the days of our years are threescore years and ten; and if by reason of strength they be fourscore years, yet is their strength labour and sorrow.” Happy is he and to be held worthy of the highest bliss whom old age shall find a servant of Christ and whom the last day shall discover fighting for the Saviour's cause.
“He shall not be ashamed when he speaks with his enemies in the gate.” On his entrance into paradise it shall be said to him: “you in your lifetime received evil things but nowhere you are comforted.” The Lord will not avenge the same sin twice. Lazarus, formerly poor and full of ulcers, whose sores the dogs licked and who barely managed to live, poor wretch, on the crumbs that fell from the rich man's table, is now welcomed into Abraham's bosom and has the joy of finding a father in the great patriarch.
It is difficult nay impossible for a man to enjoy both the good things of the present and those of the future, to satisfy his belly here and his mind yonder, to pass from the pleasures of this life to the pleasures of that, to be first in both worlds, and to be held in honour both on earth and in heaven.
Source: Letters (New Advent)