Article I. Bill of Rights
Section 15. Qualities necessary to preservation of free government
That no free government, nor the blessings of liberty, can be preserved to any people, but by a firm adherence to justice, moderation, temperance, frugality, and virtue; by frequent recurrence to fundamental principles; and by the recognition by all citizens that they have duties as well as rights, and that such rights cannot be enjoyed save in a society where law is respected and due process is observed.
That free government rests, as does all progress, upon the broadest possible diffusion of knowledge, and that the Commonwealth should avail itself of those talents which nature has sown so liberally among its people by assuring the opportunity for their fullest development by an effective system of education throughout the Commonwealth.