Light in Darkness
When Adam saw for the first time the sun go down, and an ever-deepening gloom enfold creation, his mind was filled with terror. God then took pity on him, and endowed him with the divine intuition to take two stones—the name of one was Darkness and the name of the other Shadow of Death—and rub them against each other, and so discover fire. Thereupon Adam exclaimed with grateful joy: ‘Blessed be the Creator of Light’.
TALMUD.