Iranian Poetry 'Bani Adam' Inscribed On United Nations Building Entrance

  
Sadi was born in about 1184 AD in Shiraz
He is one of the most versatile figurers in Iranian literature: Poet, writer, philosopher, teacher and a great traveler
His tomb is situated in Shiraz; in Pahlavi period, a mausoleum was built on his tomb
Works
  Boustan , in verse
  Golestan , in prose and verse

Iranian Poetry 'Bani Adam' Inscribed On United Nations Building Entrance

بنی آدم اعضای یک پیکرند
که در آفرینش ز یک گوهرند
چو عضوى به درد آورد روزگار
دگر عضو ها را نماند قرار
تو کز محنت دیگران بی غمی
نشاید که نامت نهند آدمی

A simpler translation 

The sons of Adam are limbs of each other
Having been created of one essence
When the calamity of time affects one limb
The other limbs cannot remain at rest
If you have no sympathy for the troubles of others
You are unworthy to be called by the name of a Human