Railroad Crossings

The small squares of colored paper began cropping up on the doors and walls of Henry M. Gunn High School last week, two days after William Dickens, 16, killed himself on the nearby train tracks. "Just keep swimming," one Post-it note said. "There is always someone who will listen," was written on another. And, "There's no meaning to happiness w/o sadness. Take it easy." Dickens was the fourth Gunn student in less than six months to commit suicide near where East Meadow Drive crosses the Caltrain tracks here in the affluent, high-achieving heart of the Silicon Valley.