Depth is also a quality of what we mean by soul, a quality not captured by any of our workaday categories of cognition or emotion. What is deep is profound, awe-full, mysterious, solemn, not to be confined.
McGilchrist argues that depth names an irreducible quality of soul — generative, unfathomable, and antonymous to vacuity — whose semantic history moves fluidly between the physical and the metaphysical.
, The Matter with Things: Our Brains, Our Delusions, and the Unmaking of the World, 2021thesis