I think this is one of the best movies, which I have ever seen. This movie talks about the joys and sorrows of life in such a poignant fashion. It depicts the depth of feelings and anguish of a man who has to brave the world with a cheerful face even when he is all torn and hurt inside. This movie of Raj Kapoor traces the story of a joker since childhood, his experience of love with the women in his life and what he learns from them. Raj Kapoor’s identity is depicted as a clown who tries to laugh and spread smiles even when he is all broken up inside. The Raju’s innocent heart is depicted symbolically through a laughing clown doll, which he gifts to all the women in his life only to get it back. The way he grows from an innocent child to a mature individual is depicted in a very delectable manner.
The best part of the movie is that it touches your heart and leaves you spellbound. You laugh with the clown, feel his emotions and share his grief. I liked especially climax where in the Joker realizes that joys, sorrows, emotions and love, all is a part and parcel of life.
Well, Jeena Yaha Marna Yaha, Iske Siva Jaana Kaha?
A Mirror of My Thoughts! 
What You Said!