the poet william shakespeare made a metaphorical comparison of the world to stage and of men players on the stage . from the death and entrance of life , the seven ages has been compared . the first stage of life is that infancy which is sobbing and puking in the nurse's arms . second stage is unwilling to go to school . the third stage is that of a lover who is emotional and sensitive to rejection by the mistress of loves . as a soldier he is passionate about his ambitious and challenging , then comes to the age of maturity and man gives advice to others . then man begins to lose his health , his interest in his appearance and attire decline and he is often made an object of jest, his voice becomes shrill . and in seventh age man is become without teeth , he losses his sense of vision and test his last stage is like his childhood .