Summary
This quote suggests that while a doctrinaire, or someone rigidly adhering to a particular set of principles or beliefs, may be perceived as being foolish, they are at least honest in their commitment to those principles. It implies that even if their views may be misguided or extreme, they possess integrity in staying true to their convictions. This could be seen as recognizing the sincerity and consistency of such individuals, even if their ideas may not be widely respected or accepted.