"Romantic love lies at the core of his films. The iconic R.K. logo says it all. A man, his hair a bit wild, his body taut, holds a violin in one hand, his arm stretched downwards in line with his body. In his other arm he holds a woman arched backwards in a pose of sublime submission. The logo recreates this epiphany of passion of the scene in Barsaat when Nargis, overwhelmed by the plaintively lovesick strains of Raj Kapoor's frenzied violin, rushes to him and falls into his arms. Over the years the original, more fleshed-out figures metamorphosed into these stick figures. Countless films copied that scene but failed to recreate its magic. The legendary chemistry between Raj Kapoor and Nargis made this the epitome of screen passion in Indian cinema history."
-- Madhu Jain, in The Kapoors: The First Family of Indian Cinema, page 128.