It Is a Knowledge of Our Inner World, Not the Outer One

There is another kind of knowledge. It is not one of physical facts, nor can it be quantified and measured. It is a knowledge of our inner world, not the outer one, a knowledge of what we used to call the spirit or the soul, that invisible, intangible something that animates us and leads us to ask questions about who we are and what our place in this mysterious world can be.

Gary Lachman
The Secret Teachers of the Western World