eyes water (tears)

Why do people cry why do water starts coming from peoples eyes when they are overwhelmed with emotions.there can be tears of happiness and sadness both.The tears of happiness stop in a second but the tears of sadness keep running until you cant cry anymore.Tears come out of eyes when words are unable to express are emotions .Mostly crying is related with girls because they are regarded as a weaker sex and men cry very rare because they are regarded as stronger sex .When a person is flooding with pain than tears come automatically from your eyes and sometimes it shows that you have been holding pain for long and you are tired of the burden now.Tears are not the sign of weakness they are sign of  the extreme pain a person is going through. Don't cry in front of anyone but only show yourself to those who really care for you because they will dry your tears and diminish your pain ...........What pain can teach you happiness cant and what strength pain can give you happiness cant so pain is good in its own way!