Physis: Flux, light, and cracks

Drawing on ideas about physis from philosophy and transactional analysis, Keith will consider physis as flux and evolution, and light and happiness, as well as a concept that encompasses integration and disintegration. Drawing inspiration from Leonard Cohen’s words, ‘There’s a crack in everything. | That’s how the light gets in’, Keith will argue that, alongside ideas of flux and evolution, and light and happiness, we need to reclaim the importance to physis of cracks, ruptures, and other disturbances. These are not only part of the human condition but also facilitate awareness, change, and liberation.


Dr. Keith Tudor

PhD, MSc, MA, BA(Hons), TSTA-P

My professional background is in social work (probation, and field, hospital, and psychiatric social work) and psychotherapy (voluntary sector youth counselling, and private pratice). I completed training in gestalt therapy and transactional analysis, in addition to which I have studied person-centred psychology extensively. With my partner, Louise Embleton Tudor, I founded the organisation, Temenos, in Sheffield, which was – and still is – committed to person-centred education and training, and which we directed for 17 years (1993–2010). We also designed and ran the first postgraduate person-centred psychotherapy & counselling training programme in the UK, which was also validated as a master’s degree – a Master of Science (by Middlesex University, London).

I am a Certified Transactional Analyst (Psychotherapy) and a Teaching and Supervising Transactional Analyst (Psychotherapy), a Teaching Member of the International Transactional Analysis Association, and an Associate Member of Waka Oranga.

I am the author of over 400 peer-reviewed publications, including 27 books.

As an acadmic supervisor, I have supervised seven doctoral candiates to completion, and 38 Master’s students to completion.

In 2020, I was the recipient, with Graeme Summers, of the 2020 Eric Berne Memorial Award, given by the International Transactional Analysis Association, for our work on co-creative transactional analysis, the citation for which reads ‘For Their Work on Cocreativity and Introducing a new Metaperspective for Thinking About Theoretical Development and Design in Transactional Analysis’.

Online Conference · 2026

The Nordic Transactional Analysis Conference 2026

Where Physis Finds Light: TA and the quiet power of Nordic happiness

7–8 November 2026 · Online via Zoom