He who guards his secrets retains control in his own hands

Had there not been five bad qualities, all the people would have been righteous. Contentment with ignorance; love for worldly life; miserliness inspite of much wealth; ostentation in (good) deeds; and pride in their own intelligence.

People are of two types, they are either your brothers in faith or your equals in humanity.

One who thinks and reflects develops his foresight and vision.

Know thyself, and thou shalt know God.

When proven wrong, the wise man will correct himself and the ignorant will keep arguing.

Wealth tends to create enemies, whereas knowledge tends to warm hearts.