Who are the two angels who nurture life?” “Heart and tongue”, was the reply

A student asked his teacher: “Who are the two angels who nurture life?” “Heart and tongue”, was the reply. The next question was: “Who are the two demons who destroy life?” “Heart and tongue”, was the reply again. 

  

 The cruelty and tenderness of heart makes a person mean or great respectively. Non-control over tongue leads to loss of health and friendship. Sweet and amiable speech, on the other hand, begets ample love and affection of the multitudes.

...... From Pragya Puran