Answer:
Their Heart ("size" and intentions)
Explanation:
According to Buddhism you heart can grow as long as you "receive" all the pain that others inflict on you, that means your heart starts growing as soon as it starts forgiving; that's why I said "size" because since the completeness is directly connected to the action of forgiving then the intention to improve the world given from the completeness of the heart size is directly connected to action a heart takes to be inspired.
