" The picture flips when race differences in cognitive ability and job performance are taken into account. Africans and Latins get through the educational pipeline with preferential treatment in admissions to colleges and to professional programs. Their mean IQs in occupations across the range from unskilled to those requiring advanced degrees are substantially lower than the mean IQs for Europeans in the same occupations. Race differences in measures of on-the-job performance are commensurate with the differences in cognitive ability. "

― Charles Murray , Facing Reality: Two Truths about Race in America