20 Let thus much have been said with regard to charity, without which in us there cannot be true patience, because in good men it is the love of God which endures all things, as in bad men the lust of the world. But this love is in us by the Holy Spirit which was given us. Whence, of Whom comes in us love, of Him comes patience. But the lust of the world, when it patiently bears the burdens of any manner of calamity, boasts of the strength of its own will, like as of the stupor of disease, not robustness of health. This boasting is insane: it is not the language of patience, but of dotage. A will like this in that degree seems more patient of bitter ills, in which it is more greedy of temporal good things, because more empty of eternal.
Source: On Patience (New Advent)