If you have no sympathy for human pain ... The name of human you cannot retain.

Saadi  was one of the major Persian poets and literary men of the medieval period. He is recognized for the quality of his writings and for the depth of his social and moral thoughts. Saadi is widely recognized as one of the greatest poets of the classical literary tradition.
 
" Human beings are members of a whole
In creation of one essence and soul
 
If one member is afflicted with pain
Other members uneasy will remain
 
If you have no sympathy for human pain
The name of human you cannot retain "