Well, let me just leave you with a couple of examples.
Abolitionists were called Radical Republicans, not conservative Republicans.
And it is no longer easy to find conservatives who oppose women's suffrage.
Conservative thought changes.
And I just can't count the number of times that I've seen someone at this forum post the opinion that we need to pursue the foreign policy described by Washington in his Farewell Address. And maybe someday we should. However, you can be absolutely certain that we're not going to pursue such a policy in the world that we're living in right now.
And history does not teach us that governments are inclined to become smaller during wars.
And history does not teach us that wars are a real boon for civil liberties.
The libertarians may someday have their day. But it isn't likely to be anytime soon.