I am deeply honoured by the invitation to share with you some thoughts on a double occasion: AESOP’s
30 th anniversary, and the launching of its open-access e-journal. Both these occasions represent important
milestones towards the future of the planning profession globally. To reveal why this is not an exaggeration,
I will take the readers on a journey across time and continents, to encounter the story of the evolution of
planning as a discipline and a profession. The journey will also expose challenges facing planning theory.