Short idea (83): Without feeling disrespectful in any way, it is useful for a psychologist to think of the impulse to spiritual beliefs as an instinct. If it is, it is as deep rooted as the impulse to eat and the impulse to sex. Some ascetics have tried to cut their eating down to a bare minimum. Other ascetics have tried to eradicate all traces of their sexuality. Ascetics of a different kind try to eradicate all spiritual impulses in themselves. On the other extreme, some dissolute people brag they give into all impulses to eat or to engage in sex. Others, of a different type, are proud they believe in the reality of every visionary experience of every person who reports them ("If a person feels there's a ghost in their house, sure, there must be one"). — Extreme positions with respect to spiritual realities are similar to extreme positions with respect to the other instincts. They have their places in the history of the world and in the history of each individual's life, but, for most people, in the end, they are impossible or near impossible to sustain. It usually doesn't work to give into them all or to try to get rid of them all.