The XXIII. International Congress for Analytical Psychology was held in Zürich, Switzerland in 2025, the birthplace of Analytical Psychology. 2025 also celebrated the 150th anniversary of Jung's birth and drew an unprecedented number of participants from worldwide, making this Congress the largest, most vital and collegial gathering in the history of Analytical Psychology. The pertinent Congress theme Experiences of the non-Understandable certainly contributed to the large number of rich and scholarly presentations that reflected on the conflicting dilemmas that face modern life with its increasingly global complexities. The Congress enabled in-between international spaces for sitting with unknown psychic contents without necessarily trying to solve them and the Congress offered ways of exploring complex themes via a rich program of pre-congress workshops, master classes, plenary and break-out presentations and posters.The Proceedings are published in two volumes: a printed version of the plenary presentations, and an e-book with the complete material presented at the Congress.This collection of papers offers an important cross-section and insight into contemporary Jungian thought, from classical theories and perspectives to the latest scientific research.From the Contents:An Interview with Dr Fanny Bewster by Deborah Stewart; Reflections on her Life Emma Jung-Rauschenbach: Dedicated to the Soul by Eggenberger-Jung, Fischer and LammersFrom Individuation through Synchronicity to the Psychoid Imagination and the Re-enchantment of the World by Joe Cambray BodyDreaming - An Approach to Our Times by Marian DunleaOn Death, Hope and Soul, When the Self Compensates Chaos by Kristina SchellenskiComing to terms with the Other. Entering the unknown/non-understandable by Audrey F. PunnettNon-understandable World of ASD. Therapists implicit understanding and subsequent deepening understanding by Toshio KawaiA late Confirmation: Review of C.G. Jung's Understanding of Dreams in the light of Modern Dream Research by Konstantin RösslerWhat has changed? Has anything changed? What needs to change? Does anything need to change? Late-career reflections on international analytical psychology by Andrew Samuels The Place of Psychedelics in Jungian Analysis by Leslie SteinRe-enchantment in Adolescent Psyche: Spiritual Experiences in Online Drama-Based Games (DBG, Anime and Dreams by Kan Chen & Xiao YouLooking at us through their eyes. The analytical process from ethnographic perspectives by Stefano Carta