One of the most compelling and clarifying books I've read in a long time. Though I wouldn't use the Friedman's vocabulary, agree with his evolutionary presumptions, or have anywhere near his positivity apart from the gospel, I'd still say the Rabbi asks great questions that every leader (husband, father, pastor, boss, president, etc.) should consider.
Read again and discussed with the TEC elders through 2013. Fantastic material for a leadership team, as long as that team already has a strong theological basis.