Doing a brief search online I came up with some interesting things from which you can form your own opinion (it didn't take long for me to form mine! ):

John Ortberg: Educated at Fuller Theological Seminary (M.Div and a Ph.D. in Clinical Psychology), where he is also on the Board of Trustees. He pastors a "Willow Creek" church in Menlo, CA. He has written a plethora of books of which I would have you take notice of the titles and the reviews provided of them online. And lastly, I found this page that has some "interesting" information, John Ortberg Promotes Contemplative Prayer.

Dallas Willard:
Professor of Philosophy
B.A., Tennessee Temple College (Psychology), 1956
B.A., Baylor University (Philosophy & Religion), 1957
Ph.D., University of Wisconsin, 1964

Specializations:
Metaphysics, Contemporary European Philosophy, Theory of Knowledge, Ethics, History of Ethics, the philosophy of Edmund Husserl.

Again, see this site for some criticisms: Dallas Willard — Promoting Contemplative Prayer and Mysticism.


[Linked Image]

simul iustus et peccator

[Linked Image]