Smritis’ contain knowledge about how to lead a life without harming others. The duties to be performed at the 4 stages of human life, viz. childhood, youth, middle age and old age are clearly mentioned in Smritis. The laws to implement discipline in the society and the punishments if the laws are not followed are discussed in Smritis. Manu Smriti, Yajnavalkya Smriti and Parasara Smriti are most important Smritis among others.