“It is not difficult to build a sanctuary,” wrote the great 19th-century German rabbi Samson Raphael Hirsch. “It requires a moment of inspiration and a mood of generosity. But it is much more difficult to generate an enduring enthusiasm to be retained for years—or even a lifetime. Without such support, the structure itself would remain cold and lifeless. Enthusiasm for the Sanctuary must never subside. The Sanctuary and its goals must never be considered out of date.”