The First Ennead:
  • The animate and the man
  • On virtue
  • On dialectic [the upward way]
  • On true happiness
  • Happiness and extension of time
  • Beauty
  • On the primal good and secondary forms of good [otherwise, on happiness]
  • On the nature and source of evil
  • The reasoned dismissal

The Second Ennead:
  • On the cosmos or on the heavenly system
  • The heavenly circuit
  • Are the stars causes
  • Matter in its two kinds
  • On potentiality and actuality
  • Quality and form-idea
  • On complete transfusion
  • Why distant objects appear small
  • Against those that affirm the creator of the cosmos and the cosmos itself to be evil: [generally quoted as "Against the gnostics"]

The Third Ennead:
  • Fate
  • On providence (1)
  • On providence (2)
  • Our tutelary spirit
  • On love
  • The impassivity of the unembodied
  • Time and eternity
  • Nature contemplation and the One
  • Detached considerations

The Fifth Ennead:
  • The three initial hypostases
  • The origin and order of the beings following on the first
  • The knowing hypostases and the transcendent
  • How the secondaries rise from the first: and on the One
  • That the intellectual beings are not outside the intellectual-principle: and on the nature of the good
  • That the principle transcending being has no intellectual act: what being has intellection primally and what being has it secondarily
  • Is there an" ideal archetype of particular beings
  • On the intellectual beauty
  • The intellectual-principle, the" ideas, and the authentic existence

The Sixth Ennead:
  • On the kinds of being (1)
  • On the kinds of being (2)
  • On the kinds of being (3)
  • On the integral omnipresence of the authentic existent (1)
  • On the integral omnipresence of the authentic existent (2)
  • On numbers
  • How the multiplicity of the ideal-forms came into being: and on the good
  • On free-will and the will of the One
  • On the good, or the One