The Secret of Secrets and Other Philosophical Treatises

1. The Letter of Aristotle to Alexander, or the Secret of Secrets A widely circulated medieval book of advice for rulers, once believed to be a genuine letter from the philosopher Aristotle to his pupil Alexander the Great.
2. On the preservation of health according to Avicenna Avicenna is the Latinized name of Ibn Sina, an influential Persian physician and philosopher.
3. The Second Philosophy of William of Conches A 12th-century French philosopher who sought to reconcile Christian doctrine with physical science., namely concerning the human body
4. The Third Philosophy of the same author, On the World

Here begin the chapters in the letter of Aristotle to King Alexander, which is called the Secret of Secrets.

1. On kings and their conduct regarding generosity and greed.
ii. On the reputation of the king.
iii. On the reverence of the king toward God and his subjects.
iiii. On the foresight original: "prouidentia" of the king.
v. On the clothing of the king.
vi. On the self-restraint of the king.
vii. On the customs of the king.
viii. On the justice of the king.
ix. On the final purpose of the king.
x. On the chastity of the king.
xi. On the comfort and discernment original: "discretione" of the king.
xii. On the goodness of the king toward his subjects.
xiii. On the character of the king.
xiv. On the likeness of the king.
xv. On the assistance of the king.
xvi. On the mercy of the king.
xvii. On the king’s pledged word and confirming it with scribes.
xviii. On the promotion of study in the kingdom.
xix. On the protection of the king’s body.
xx. On knowledge original: "scia", an abbreviation for "scientia" in astronomy.
xxi. On the preservation of health and in how many ways.

Secret of Secrets original: "Secretum Secretorum", Aristotle original: "Aristoteles", Avicenna, William of Conches original: "Willelmus de Conchis", Coislin Collection A famous collection of Greek and Latin manuscripts now held in the Bibliothèque nationale de France., astronomy original: "astronomia", preservation of health original: "conservatio sanitatis", Henri du Cambout