Hitherto the attempt has been made to meet the difficulty by excluding from the public schools what the state calls sectarianism--that is, whatever is distinctive of any particular denomination or peculiar to it--and allowing to be introduced only what is common to all, or, as it is called, "our common Christianity." This would, perhaps, meet the difficulty, if the several denominations were only different varieties of Protestantism. The several Protestant denominations differ from one another only in details or particulars, which can easily be supplied at home in the family, or in the Sunday-school. But this solution is impracticable where the division is not one between Protestant sects only, but between Catholics and Protestants. The difference between Catholics and Protestants is not a difference in details or particulars only, but a difference in principle. Catholicity must be taught as a whole, in its unity and its integrity, or it is not taught at all. It must everywhere be all or nothing. It is not a simple theory of truth or a collection of doctrines; it is an organism, a living body, living and operating from its own central life, and is necessarily one and indivisible, and cannot have any thing in common with any other body. To exclude from the schools all that is distinctive or peculiar in Catholicity, is simply to exclude Catholicity itself, and to make the schools either purely Protestant or purely secular, and therefore hostile to our religion, and such as we cannot in conscience support. Yet this is the system adopted, and while the law enables non-Catholics to use the public schools with the approbation of their consciences, it excludes the children of Catholics, unless their parents are willing to violate their Catholic conscience, to neglect their duty as fathers and mothers, and expose their children to the danger of losing their faith, and with it the chance of salvation. We are not free to expose our children to so great a danger, and are bound in conscience to do all in our power to guard them against it, and to bring them up in the faith of the church, to be good and exemplary Catholics. Evidently, then, the rule of allowing only our supposed "common Christianity" to be taught in schools does not solve the difficulty, or secure to the Catholic his freedom of conscience.