The pursuit of truth depends on the stability of morality in the soul and justice in the city, just as the soul is better than but depends upon the well-being of the body. The philosopher-scientist is attached to the universe as a whole. Human beings and human affairs are seen as part of this whole. Attachment to the whole requires detachment from individual parts. The particular human mind mirrors or reflects the universal or general.
Science is superior to ethics or politics.
Knowing is better than thinking. Leisure is better than work. Justice is proportion in human affairs. The highest knowledge is knowledge of the highest things. Human beings can be happy, at least for brief moments in this life.