No reliance can be placed on the friendship of kings, nor vain hope put in the melodious voice of boys; for that passes away like a vision, and this vanishes like a dream.
SaadiWhosoever formeth an intimacy with the enemies of his friends, does so to injure the latter. O wise man! wash your hands of that friend who associates with your enemies.
SaadiIf a piece of worthless stone can bruise a cup of gold, its worth is not increased, nor that of the gold diminished.
Saadi