By "radical" I understand one who goes too far; by "conservative" one who does not go far enough;

Related:

• Only those who will risk going too far can possibly find out how far one can go.
  T.S....
• A conservative is a man who sits and thinks, mostly sits.
  Woodrow...
• A conservative is one who is too cowardly to fight
  and too fat to run...
• No one who has read official documents needs to be told how easy it is to conceal the essential truth under the apparently candid and all-disclosing phrases of a voluminous and particularizing report.
  Woodrow...
• O'Toole's Axiom: One child is not enough,
  but two children are far too many...
• One child is not enough, but two children are far too many.
  O'Toole's...
• All movements go too far. --
  Bertrand...
• Pro: Children ask better questions than do adults. "May I have a cookie?" "Why is the sky blue?" and "What does a cow say?" are far more likely to elicit a cheerful response than "Where's your manuscript?" "Why haven't you called?" and "Who's your lawyer?" Con:
  Even when freshly washed and relieved of all obvious...