The same revolutionary beliefs for which our forebears fought are still at issue around the globe, the belief that the rights of man come not from the generosity of the state but from the hand of God. (John F. Kennedy - 1961 Inaugural)
The other ideas:
The idea of God is the keystone of a perverted society. The true root of liberty, equality and culture is atheism. (Karl Marx)
Our thinking is enlightened in the degree in which we cease to depend upon belief in the supernatural. (John Dewey, father of progressive education and 1st President of American Humanist Society)
democracy is a human faith and movement, unencumbered by supernatural preconceptions. (John Childs, a protégé of John Dewey at Columbia)
the majority of our youth still hold the values of their parents, and if we do not alter this pattern, if we do not resocialize ourselves to accept change, our society may decay. (John Goodlad, 1971 Report to President, Schooling for the Future)
Another great post