Both education and religion are indispensable for maintaining a free society.

"The principles of the American Founding, stated most eloquently and concisely in the Declaration of Independence, must be studied and firmly grasped if we are to return to the constitutionalism of the Founding. In turn, this means that the virtues must be developed in the citizenry. The development of these virtues cannot be coerced, since coercion runs contrary to the nature of virtue itself.
Both education and religion are indispensable for maintaining a free society. Likewise, the manner in which they are supported by government is also important. The Founders provide clear examples of the necessary means by which the ends stated in both the Declaration and the Constitution can be achieved. In order to restore American constitutionalism, the proper ends of government—as understood by the Founders—must be reestablished."

From Constitution 101 Course- Hillsdale College