A conservative is a man who believes that nothing should be done for the first time.
My response would be thus:
A liberal is a person [no self-respecting liberal would be so sex discriminatory as to say "man"] who believes that everything is being done for the first time.
This one strikes close to home, considering the name of this blog. When conservatives stand athwart history yelling "Stop!", a part of the reason may be the one Wiggam accuses us of. And I stand by that: there are certain things that simply should not be done even once. But the much more common reason is that liberals - as a group - have very little sense of history. The solutions they propose have usually been tried before, with predictable side effects (or, worse, unpredictable ones).
Liberals are generally not even in touch with their own history. Many modern liberals disdain the term "liberal", preferring "progressive." This shows a profound ignorance on their part. The Progressives of the first part of the 20th century were eugenicists (Margaret Sanger), racists (Woodrow Wilson), and, well, fascists or at least sympathizers with fascism (I use the term in its narrow and precise meaning, not as a synonym for Nazism or Hitlerism). Jonah Goldberg documented this extensively in Liberal Fascism.