On the Trinity
 Avicenna
 Bartholomew
 Bonaventure
 Eckhart
 Maimonides
 Peter Abelard
 William of Ockham
On Angels
 Bartholomew
 Robert Grosseteste
 Thomas Aquinas
On the Afterlife
 John Duns Scotus
 Wm. of Auvergne
On Providence
 Wm. of Auvergne
On Grace
 Eckhart
 Richard Rufus
On Sin and Virtue
 Peter Abelard
 Richard Rufus
 William of Ockham

On Animate Beings
 On Birds
 On Fish
 On Humans
 On Mammals
 On Plants
 On Reptiles
 On Spiders
On Inanimate Beings
 On Astronomy
 On the Elements
 On Geography
 On Minerals
 On Weather

The Academic World
 On Logic
 On Music
The Church
 On Heresy
 On Liturgy
 On Property
The Literary World
 On Myths & Mythical Beasts
The Social World
 On Social Roles