'Friendship' is a significant aspect of social life. It helps in shaping the personality of an individual and contributes to the well-being of the society. Sociology and psychology were conceived as disciplines worth pursuing only a few hundred years ago. But long before they could develop as disciplines, Valluvar has made definitive comments on what makes people come together as friends, who is worth to make friends with, whose friendship one should shun, etc. He also talks about the privileges of friendship and cautions as to how one's adversaries would make advances as friends, concealing their evil intents. The richness of thought contained in his couplets reflects the civilized status of his contemporary society.