Sir Winston Dumbass
Obviously, I agree with the first part. But, I think that the latter sells mankind short. The loss of those ideals most of us have when we're young is not some inevitable side effect of the maturing process. Nor is it the much more disturbing opening of the eyes to some right-wing "reality" or just "the way the world works."
No, it's giving up plain and simple. Utopia cannot- and probably should not-ever be attained. The perfection of an ideology will always fall to the corruption of those charged with putting it into action. But it doesn't matter. Just because it can't be made perfect doesn't mean that it can't be made better. Letting one's ideals fall by the wayside for this reason is just lazy.
Perhaps that's why there's no such thing as a "conservative intellectual".
No, the obviously scary smart, William F. Buckley's take on politics is the equivalent of a priest's take on sex. Misguided, unwarranted, and decidedly not intellectual.