The believer in God has to account for the existence of unjust suffering the atheist has to account for everything else.

One wears one's mind out in study, and yet has more mind with which to study. One gives away one's heart in love and yet has more heart to give away. One perishes out of pity for a suffering world, and is stronger therefore. So, too, it is possible at one and the same time to hold on to life and let go.