"The fool hath said in his heart, there is no God." (Psalm 14:1) "Though you grind a fool in a mortar with a pestle along with crushed grain, Yet his foolishness will not depart from him." (Prov. 27:22)

An atheist will try to make proselytes even to a system as fatherless, so forlorn, and so gloomy as his. And, he will try it on the same principle that causes children to cry at night for a bedfellow - he is afraid to be alone in the darkness. (From Encyclopedia of Sermon Illustrations, Compiled by David F. Burgess, p. 20)