Join our free Psychedelic Workshop Pick a date
Free Online workshop


Join us for an informative session on psychedelics and natural medicine, featuring practical insights from leading experts in the field. We are here to answer any questions you may have.

In this workshop you’ll learn about:

✓ The history of psychedelics

✓ How psychedelics interact with the body

✓ Phases of a psychedelic journey

✓ Preparing and integrating a psychedelic journey

✓ The latest science

Workshop TEAm

Maarten and Janneke have guided hundreds of people through our extensive psychedelic programs. They are convinced that the challenges of the future are best addressed by reconnecting with nature and self-discovery.


Chief Executive
Founder | Mentor

Maarten has been teaching meditation and assisting people to make the journey inward for over a decade. With silence, plants and fungi he guides people towards natural wisdom. Maarten has founded Delight Yoga, Wisdom in Business, Return to Sender and The Loft. These initiatives function as a network of organisations united around one sole purpose: inspiring a more natural and conscious way of living. Early in his career, he worked for some large companies which allowed him to think big in terms of organisation and communication. Leading several creative agencies taught him the power of storytelling. Spinoza forms the pinnacle of a personal journey with plant medicine starting in 1999 and has grown into an intelligent network of therapists and scientists united in the mission to experience and experiment with the health potential of natural medicine and nature therapy. Maarten is a proud father to Philip, Alexander and Victoria, and dedicated husband to Anna.

jannEKE KRIJGsman

Head of Experiences
Mentor | Teacher

Janneke loves guiding people to reconnect to their most authentic self. For many years she has been teaching meditation, yoga and breathwork, while also exploring the fields of plant medicine. For the last couple of years she has specialized in working 1 on 1, assisting people to find more clarity in the various challenges of life. Continuously inspired by her own inner journey, Janneke naturally invites people to discover their inner world, with all its depth and beauty. She has been with Spinoza from day one and has been essential in creating the Spinoza Programs. Janneke brings a peaceful and loving presence as well as her voice and music to each Spinoza Ceremony. She loves beautiful conversations, early morning dips in the sea, and sharing homemade food with her loved ones. She lives in The Hague and is a dedicated mother to her son Maas and daughter Ief.