Complexity, Sustainability and Transdisciplinarity make CST, the acronym, do double duty in representing the three pillars on which the Centre for Complex Systems in Transition stood. The CST was a merger of two Stellenbosch University Hope Projects: the Centre for Studies in Complexity (CSC) and the TsamaHub (Transdisciplinary, Sustainability, Analysis, Modelling & Assessment Hub). The CSC, established in 2009 as a trans-faculty centre between Science and Arts and Social Sciences, was led by Prof Paul Cilliers and I, and then by me after Paul’s untimely death in 2011. The TsamaHUB, led by Prof Mark Swilling and coordinated by John van Breda, was located in the School of Public Leadership (SPL) in the Faculty of Economic and Management Sciences.