The figure above diagrams several political distinctions. The vertical line distinguishes the political left who are mainly concerned with equality, and the political right who are mainly concerned with liberty. Above the horizontal line distinguishes the religious left and right from the secular left and right below.
The circle distinguishes those within who accept limitations on government and limited rights for citizens. Liberals (which includes the center left) would like more equality and conservatives (which includes the center right) would like more liberty within this arrangement. Change is brought about through evolutionary, lawful means. Outside the circle are revolutionaries, either the radical left who do not accept limitations on equality or the radical right who do not accept limitations on liberty.
Note that liberals and conservatives have much in common. The distinction between evolutionary and revolutionary means should be more significant than that between the left and the right. The distinction between religious goals and secular goals should also be more significant than that between the left and the right. Conservatives and liberals should think of themselves as being on the same side against the radicals. Religious liberals and conservatives have much in common, as have secular liberals and conservatives.