::—John Clifford, 1905<ref>"Clifford, John (190-) ("The Rev. John Clifford, D.D."), "Passive Resistance in England and Wales." ''The North American Review,'' 1905, [http://books.google.com/books?vid=0mtYjU29qkWCiIvihryzCSI&id=sF0CAAAAIAAJ&pg=PA436&lpg=PA436&dq=%22slippery+slope%22&as_brr=1#PPA436,M1 p. 436]</ref> | ::—John Clifford, 1905<ref>"Clifford, John (190-) ("The Rev. John Clifford, D.D."), "Passive Resistance in England and Wales." ''The North American Review,'' 1905, [http://books.google.com/books?vid=0mtYjU29qkWCiIvihryzCSI&id=sF0CAAAAIAAJ&pg=PA436&lpg=PA436&dq=%22slippery+slope%22&as_brr=1#PPA436,M1 p. 436]</ref> |