Once I had written, life is a mathematics.You add, take out (subtract),multiply and divide things in your life.So life is a great mathematics. But are the rules of mathematics always true in life? No , it is a  big 'NO'.Does it sound strange?I know , certainly it does. In maths., sum of  minus one and  plus  one is zero. But suppose, a man has to catch a train. He is short by ten rupees.He comes and asks you the money but you don't pay him.He misses his train. Latter on , even if you pay him ten rupees,he can't catch the train. So here the sum of minus one and plus one is not zero.Here it is minus one.Now take another example.A person gives you ten thousand rupees.You utilise them properly. and become a rich man.Now even if you return him  those ten thousand rupees, it will not make  you zero.Here the sum of  plus one and minus one is not zero.              
       Life follows only one rule-----if  you ever do a  harm to someone you can't undo it , on the contrary ,if someone does something  good to you ,you can't return it,