``Collier has made a substantial contribution to current discussions.
Unlike many academics Collier comes up with very concrete proposals and. . .
His evidence-based approach is a worthwhile corrective to the assumptions about Democracy that too often tend to dominate when Western policy makers talk about the bottom billion.`` --The New York Times Book Review ``Before President Obama makes a move he would do well to read Professor Paul Collier\'s Wars, Guns, and Votes . ``Collier has made a substantial contribution to current discussions