He said, “As human we domesticated fire long back and took control of a great force.  It helped us to cook a lot of digestive foods, kill germs and it reduced our eating time. As a result our teeth became smaller and intestines shorter. Thus, there was more supply of energy to our brain and the  advancements thereof.Also, fire helped to  scare the mighty animals protect us.” 

She heard him patiently and said  ” Do you have that fire in your belly now?  That’s what matters.”