It was the worst fog I’d ever been in. A few nights ago, a lazy cloud settled on the earth, making driving nearly impossible. Visibility was fifteen feet at best, and our car’s high beams only revealed more fog. So slowly our family traveled home, with the car staying close to the only visible sign of direction—the road’s solid white line. Even the double yellow line in the middle of the road was engulfed by fog and the glare of oncoming traffic. What kept us sane and moving forward—that security-giving, nerve-calming white line.