No ember lasts long by itself

D. L. Moody was visiting a prominent Chicago citizen when the idea of church membership and involvement came up."I believe I can be just as good a Christian outside the church as I can be inside it," the man said.

Moody said nothing. Instead, he moved to the fireplace, blazing against the winter outside, removed one burning coal, and placed it on the hearth.

The two men sat together and watched the ember die out.
"I see," the other man said.

Citation: Keith Long, Room to Grow (Hendrickson, 1999), quoted in Men of Integrity (3.2).