Ever since the first humans discovered the warmth and light of the flame, mankind has been searching for new ways to ignite the earth.
A single spark, lit centuries ago, has transformed our once starlit planet into a blaze of automobiles, ammunition, and industry. On the surface, it seems that our ultimate achievement has been to propel and incinerate the visible world.
But what kind of effort has been made to inflame the nonmaterial world? The great spark in the Lord's Prayer - "Thy kingdom come" - has been recited for centuries. Yet have we let it completely transfigure the globe with its fire?
There is no great distance between spark and inferno, nor between visible and invisible. Is it possible, then, that the full potential of combustive power has yet to be realized on earth?