12 Whence every one of us, when he is born and received in the inn of this world, takes his beginning from tears; and, although still unconscious and ignorant of all things, he knows nothing else in that very earliest birth except to weep. By a natural foresight, the untrained soul laments the anxieties and labours of the mortal life, and even in the beginning bears witness by its wails and groans to the storms of the world which it is entering. For the sweat of the brow and labour is the condition of life so long as it lasts.
Nor can there be supplied any consolations to those that sweat and toil other than patience; which consolations, while in this world they are fit and necessary for all men, are especially so for us who are more shaken by the siege of the devil, who, daily standing in the battlefield, are wearied with the wrestlings of an inveterate and skilful enemy; for us who, besides the various and continual battles of temptations, must also in the contest of persecutions forsake our patrimonies, undergo imprisonment, bear chains, spend our lives, endure the sword, the wild beasts, fires, crucifixions— in fine, all kinds of torments and penalties, to be endured in the faith and courage of patience; as the Lord Himself instructs us, and says, “These things have I spoken unto you, that in me you might have peace.
But in the world you shall have tribulation; yet be confident, for I have overcome the world.” And if we who have renounced the devil and the world, suffer the tribulations and mischiefs of the devil and the world with more frequency and violence, how much more ought we to keep patience, wherewith as our helper and ally, we may bear all mischievous things!
Source: The Treatises of Cyprian (New Advent)