"If change is to come, then, it will have to come from the outside. It  will  have  to  come  from  the  margins.  As  an  orthodoxy  loses  its standards,  becomes  unable  to  measure  itself  by  what  it  ought  to  be, it  comes  to  be  measured  by  what  it  is  not.  The  margins  begin  to  close in  on  it,  to  break  down  the  confidence  that  supports  it,  to  set  up standards  clarified  by  a  broadened  sense  of  purpose  and  necessity,  and to  demonstrate  better  possibilities.  Though  it  does  not  necessarily  or always  work  for  the  better— though  indeed  this  swing  from  the  center to  the  margins  and  back  again  may  be  in  itself  a  condemnation— this  sort  of  change  is  a  dominant  theme  of  our  tradition,  whose ''central"  figures  have  often  worked  their  way  inward  from  the  margins. It  was  the  desert,  not  the  temple,  that  gave  us  the  prophets ;  the colonies,  not  the  motherland,  that  gave  us  Adams  and  Jefferson.