Professor David Castle is Professor of Psychiatry at St Vincent’s Health and The University of Melbourne. His clinical and research interests include schizophrenia and related disorders, cannabis abuse and bipolar disorder. David has published widely in prestigious journals, including nearly 700 papers and chapters; and has co-authored or co-edited 23 books. He has received a number of commendations for his work, including the Ian Simpson Award by the RANZCP for outstanding contributions to clinical psychiatry in 2015. David speaks regularly at scientific meetings about his research, and teaches at undergraduate and postgraduate levels. He completed a Graduate Certificate in University Teaching from the University of Melbourne in 2011, was elected as a Fellow of the Melbourne Medical School Academy of Clinical Teachers in 2013 and awarded a Certificate of Outstanding Teaching from the University of Melbourne in 2015. David served two years as Chair of the Victorian Branch of the Royal Australian and New Zealand College of Psychiatrists and was elected to the Binational RANZCP Board in 2016. In 2016, he became a member of the Australian Institute of Company Directors.