"I am now convinced that theoretical physics is actually philosophy"

Max Born's quote recommends that theoretical physics is more than simply a clinical field, but rather a form of viewpoint. This is because theoretical physics is worried about understanding the essential nature of deep space and its laws, which is a philosophical pursuit. By studying theoretical physics, one can get insight into the underlying structure of deep space and the concepts that govern it. This is similar to the manner in which philosophy looks for to understand the basic nature of truth and the principles that govern it. Hence, Max Born is recommending that theoretical physics is a type of approach, as it is interested in understanding the fundamental nature of deep space.