Quote from : Ecology and Experience: Reflections from a Human Ecological Perspective Book

The border between personal and transpersonal experience is a complex region. It is a territory often filled with spiritual and religious views. Within psychology it was a significant preoccupation of William James, Carl Jung, Abraham Maslow, and many others. But these margins may be seen in other ways as well. There is substantial evidence from psychological studies of personal space that we carry body boundaries of extended space around ourselves. These spatial extensions are not only personal. They may be felt by groups as well—in terms of shared “social” space, communal territories, or even national identities.