I can\'t help thinking about you, since you have passed away! I am truly shocked and in a state of disbelieve that you are no longer with us. I always found you to be a sincere gentleman and a passionate teacher. You\'ll be missed, but never forgotten.

Dear Jon,
Thank you for your inspiring classes and stories.
Rest in peace

Life and love go on, let the music play - Johnny Cash

With heartfelt sympathy,

Welmoed

You are a best teacher and life mentor. Rest In Peace.

Dear Jon,

Thanks for the inspiring stories. Rest in peace.

Jeroen van Boheemen

Dear Jon,

Thank you for the great lessons and stories. You we an inspiration to many of us and will be greatly missed! My condolences to family and friends.

Rest In Peace

Joost

A great person. Amazing teacher. Еxperienced, smart, innovative, tolerant, open-minded, fair... I don\'t think he saw teaching as a job but as a mission to share knowledge with, and be guide for, the people from all around the world. To help us all. Despite the fact that this is a very difficult task, he managed to do it perfectly and in the same time make more and more people follow, admire, respect and love him.
Rest in peace my great teacher, I will never forget you.

Jon you were an inspiring teacher you tought our class a lot with your stories.

My thoughts are with his wife maureen and their children

Rest in peace

Jon has taught me much in life. His great personality, gentle nature and kind traits were always present. He will be remembered and missed forever. Rest in Peace.

Dear Jon! My thoughts are with you, your wife and family! Thank you for sharing your stories with us and for being such an amazing teacher! Rest in Peace!