We've seen them on monuments, trees and walls. But the art of doodling has taken on a new meaning in Panjab University with messages and graffiti scrawled on desks and sometimes read years later - some witty, some banal and others profound.

"Overnight success normally takes 15 years," said one message engraved on a desk in one of the classrooms of the Department of Law. It may scare some young minds on the long road to success, but, for optimists, the message for hard work has to be read between the lines.