That is the secret of happiness and virtue -- liking what you've got to do.

All right then," said the savage defiantly, I'm claiming the right to be unhappy."
"Not to mention the right to grow old and ugly and impotent; the right to have syphilis and cancer; the right to have too little to eat, the right to be lousy; the right to live in constant apprehension of what may happen tomorrow; the right to catch typhoid; the right to be tortured by unspeakable pains of every kind."
There was a long silence.
"I claim them all," said the Savage at last.

People believe in God because they've been conditioned to believe in God." (p.207)

Ford's in his flivver; all's well with the world.

Mother, monogamy, romance. High spurts the fountain; fierce and foamy the wild jet. The urge has but a single outlet. My love, my baby. No wonder those poor pre-moderns were mad and wicked and miserable. Their world didn’t allow them to take things easily, didn’t allow them to be sane, virtuous, happy. What with mothers and lovers, what with the prohibitions they were not conditioned to obey, what with the temptations and the lonely remorses, what with all the diseases and the endless isolating pain, what with the uncertainties and the poverty—they were forced to feel strongly. And feeling strongly (and strongly, what was more, in solitude, in hopelessly individual isolation), how could they be stable?

But God doesn’t change.’
'Men do, though.’
'What difference does that make?’
'All the difference in the world.