The term ‘scientist’ was invented just under 200 years ago. What we now call ‘science’ was then known as ‘natural philosophy’. Since then, we’ve made a clear distinction between philosophy and the empirical sciences, to the extent that they are often perceived to be unrelated. However, it may be a mistake to divide human quest for knowledge in this way. Professor Ronald De Sousa at the University of Toronto argues that philosophy and science are inextricably linked. For him, you cannot escape philosophy when you are thinking about anything systematically and scientifically.