Wisdom from Prophets

The best of friends is he who is best in behavior and character -Prophet Muhammad (PBUH)

Wisdom from Quran

The worldly things which ye are given are but the conveniences of this life and the glitter thereof; but that which is with Allah is better and more enduring: will ye not then be wise? (28:60)

Wisdom from Imams

You may be in need but remember that if you have need of someone, you still turn yourself into his slave. But if you do away with that need, you will be his equal and if you show benevolence to someone, you will be his master- Imam Ali (AS)