“There is nothing in the basic principles of liberalism to make it a stationary creed; there are no hard-and-fast rules fixed once and for all.  The fundamental principle that in the ordering of our affairs we should make as much use as possible of the spontaneous forces of society, and resort as little as possible to coercion, is capable of an infinite variety of applications.”

F.A. Hayek, The Road to Serfdom [1944]