2 I believe that the mass of mankind have spurned from themselves and censured in others this acquiescence in a thoughtless, animal life, for no other reason than that nature herself has taught them that it is unworthy of humanity to hold themselves born only to gratify their greed and their sloth, and ushered into life for no high aim of glorious deed or fair accomplishment, and that this very life was granted without the power of progress towards immortality; a life, indeed, which then we should confidently assert did not deserve to be regarded as a gift of God, since, racked by pain and laden with trouble, it wastes itself upon itself from the blank mind of infancy to the wanderings of age. I believe that men, prompted by nature herself, have raised themselves through teaching and practice to the virtues which we name patience and temperance and forbearance, under the conviction that right living means right action and right thought, and that Immortal God has not given life only to end in death; for none can believe that the Giver of good has bestowed the pleasant sense of life in order that it may be overcast by the gloomy fear of dying.
Source: On the Trinity (New Advent)