Lyle Schaller, Activating the Passive Church, p. 19.
A young couple rented a vacation cottage for a week. One afternoon the husband looked out a window at the swimming pool and exclaimed, "Let's change our clothes and go get some exercise!? His wife, who was washing the dishes in the kitchen and looking out the window watching some people play tennis, quickly agreed. While she dressed for a tennis match, he put on his swimming trunks.
The window a person chooses to look out at the world often determines that individual's perception of reality.