Ol and Val find a back door into Book I of Spinoza's Ethics, making everything a lot easier with some context: the Appendix to Book I where Spinoza critiques our theological prejudices which lead us to imagine God as some kind of super human being.

Ol and Val try to figure out why Luna chose to travel just up the road from The Hague to Amsterdam to meet Spinoza and read his book The Ethics.

Elizabeth of Bohemia, member of a world-historical family, diplomat, philosopher, convent-founder, friend of religious dissidents, refuser of a compromised marriage, finds a massive problem in Descartes Meditations and thereby founds the modern philosophy of mind and its troubles.

Episode 13 features a special guest, Eloise Mignon, who works in and between theatre and philosophy.

Led astray by impostors of Mr Pleasure and Miss Pain LUNA finds that her body can betray her and tell her to do things which are bad for it: is there any remedy?

Descartes takes Luna back to nature and nature's teachings so as to secure the foundations of our knowledge of the properties of external material bodies - and of "light, sound and pain"!

LUNA ventures out into the material world, edging out along the argument from sense-perception, holding herself on a cliff edge over the ocean waves, asking herself where all these unwanted untidy sense-perceptions come from...

LUNA explores the 1st section of Descartes' Meditation 6 on the powers of the imagination and its probable origin in the material world - can LUNA ever make it back to certain knowledge of her everyday reality, where she was perfectly happy before she began this journey into philosophy? Will we find out in this episode?

LUNA continues her travels through Meditation 5 of Descartes' Meditations in which Descartes attempts to secure certain knowledge of material things and ends up happy talking to triangles.