Who His source of wisdom His attitude
Eliphaz Wisdom is learned by observing and experiencing life: remember, see, and investigate. (Job 4:7-8, 5:3, 5:27) "I have personally observed how G-d works and have figured out His ways."
Bildad Wisdom is inherited from the past.  Trustworthy knowledge is secondhand: inquire of the past.  (Job 8:8-9)  "Those who have gone before us have figured out G-d's ways: use their knowledge."
Zophar Wisdom belongs to the wise: seek the secrets.  (Job 11:5-6) "The wise know what G-d is like, but there aren't many of us around."
Job Wisdom comes from G-d and the first step toward wisdom is to fear G-d. (Job 28:20-28) "G-d reveals his wisdom to those who humbly seek him."

 Adapted from the Zondervan NIV Study Bible