The caste system was socially efficient, given its openness with respect to merit, but I regarded it as somehow ethically objectionable. It was still too rigid, in my opinion, particularly with respect to the selection of rulers from the High Castes and with respect to the Double Knowledge. But far more deplorable than the caste system was the institution of slavery. There were only three statuses conceivable to the Gorean mind outside of the caste system: slave, outlaw, and Priest-King. A man who refused to practice his livelihood or strove to alter status without the consent of the Council of High Castes was, by definition, an outlaw and subject to impalement.
---Tarnsman of Gor, 3:45-46