Whoever interrupts the conversation of others to make a display of his fund of knowledge, makes notorious his own stock of ignorance.
SaadiA friend whom you have been gaining during your whole life, you ought not to be displeased with in a moment. A stone is many years becoming a ruby - take care that you do not destroy it in an instant against another stone.
SaadiThat which is not allotted the hand cannot reach; what is allotted you will find wherever you may be.
SaadiWhen a mean wretch cannot vie with another in virtue, out of his wickedness he begins to slander. The abject envious wretch will slander the virtuous man when absent, but when brought face to face his loquacious tongue becomes dumb.
Saadi