Jack Abbott Quote

The mind does not regulate its own condition. Mental depression, for example, is a state of mind caused by the body. In a cell in the hole it only seems that there is a separation of mind and body - in fact, the body's condition (of deprivation of sensations; experiences, functions, and so on) controls the moods of the mind more than in any other situation I can think of.

In the Belly of the Beast (1981)