John of Salisbury
- Wherein we indeed but follow nature, the best guide of life; for nature has gathered together all the senses of her microcosm or little world, which is man, into the head, and has subjected all the members in obedience to it in such wise that they will all function properly so long as they follow the guidance of the head, and the head remains sane.
- John of Salisbury, The Policraticus
Source: The Past Speaks: Sources and Problems in English History. Lacey Baldwin Smith and Jean Reeder Smith, Lexington, MA & Toronto: D.C. Heath and Company, 1993. 104.