“Saadi Shirazi”  was one of the major Persian poets and literary men of the medieval period. He is not only famous in the Persian-speaking countries, but has been quoted in western sources as well.
He is recognized for the quality of his writings and for the depth of his social and moral thoughts.
Saadi is well known for his aphorisms, the most famous of which, Bani Adam, in a delicate way shows the essence of Ubuntu and calls for breaking all barriers between the human beings:

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

The poem is translated by A.Marandi as:
Humans are peers of a united race,
Thus in creation, share the same base.
If one is affected with pain,
Others share the faith of same.
When you are indifferent to this pain,
You shall not earn the Humans’ name.