Wisdom from Prophets

God is not merciful to him who is not so to humankind. He who is not kind to God's creation and to his own children, God will not be kind to him -Prophet Muhammad (PBUH)

Wisdom from Quran

It is He Who has created you from dust then from a sperm-drop, then from a leech-like clot; then does he get you out as a child: then lets you reach your age of full strength; then lets you become old,- though of you there are some who die before;- and lets you reach a Term appointed; in order that ye may learn wisdom (40:67

Wisdom from Imams

Value of a man depends upon his courage; his veracity depends upon his self-respect and his chastity depends upon his sense of honor. -Imam Ali (a.s.)