On Affliction and Our Slavish Love of This World- John Calvin
Whatever be the kind of tribulation with which we are afflicted, we should always consider the end of it to be, that we may be trained to despise the present, and thereby stimulated to aspire to the future life. For since God well knows how strongly we are inclined by nature to a slavish love of this world, in order to prevent us from clinging too strongly to it, he employs the fittest reason for calling us back, and shaking off our lethargy.. . ..The heart also, engrossed with avarice, ambition, and lust, is weighed down and cannot rise above them. In short, the whole soul, ensnared by the allurements of the flesh, seeks its happiness on the earth. To meet this disease, the Lord makes his people sensible of the vanity of the present life, by a constant proof of its miseries.
-John Calvin, Institutes of the Christian Religion-