Reb Menachem Mendel of Kotzk was teaching his students. “Where is God?” he asked them.
One student answered, “God is in the heavens.”
“No,” the rebbe answered.
Another student, “God is in the earth.”
“No.”
Another, “God is all around us.”
“No.”
“So rebbe, tell us. Where is God?”
“God is where you let Him in.”