Ashkan Tashvir is a multidisciplinary author, philosopher and entrepreneur whose work bridges ontology, organisational design, human development, technology and systems thinking. His intellectual pursuit is not limited to observing the world, but transforming it. Through a rare integration of philosophical inquiry and real-world execution, he has developed frameworks that directly advance human potential, leadership and the sustainability of systems.His body of work includes the Being Framework, an ontological paradigm for leadership, performance and effectiveness, adopted by leaders across more than 50 countries. Supported by applied tools such as the Being Profile, his work enables measurable growth in individuals and organisations by illuminating the human qualities that shape, or compromise, performance, integrity and systemic resilience.In parallel with this book, Ashkan has also led the development of the Sustainability Profile, an ontometric diagnostic and transformation tool designed to elevate how leaders and organisations assess and build sustainability at the human, cultural and structural levels. Mirroring the transformative impact of the Being Profile, it offers a practical pathway for leaders to cultivate authentic sustainability in themselves, their teams and the systems they shape.Sustainabilism is Ashkan's fifth book, following Being, Human Being, Becoming and Metacontent.