In America, the purpose of separation of church and state is to avoid 'excessive entanglement' of the two institutions. An important court ruling on the subject led to the Lemon Test, which holds three conditions on a government's actions: that it must have a legitimate secular purpose, must not have the primary effect of either advancing or inhibiting religion, and must not result in an "excessive entanglement" of the government and religion.
by parody February 19, 2005