That kind of attitude leads to not being able to take any sort of challenging by anyone who you label fool or inferior, be it by smarts, knowledge, experience or other things.

The quote is a translation as far as I know. (The only reference to it I can find is in a book translated from Russian about Russia.) So subtle nuances are likely missing.

To me at least; "to make" a fool to see the truth implies that you will try and try until you succeed. This approach is ineffective because a large portion of people are never satisfied. (See: Pretty much any Internet drama or argument.) And if you adopt the attitude of winning every argument, you will almost inevitably flood communication channels with your discourse. (See: Any HN thread where the whole page is a few outlying comments and a majority in a threaded argument about a topic. Or a forum thread that goes on for pages where people argue about something.) Such discourse also costs you time to participate in and prevents you from doing more useful work. (Before writing this comment I could have sworn that Newton wrote a letter to this effect explaining why he stopped publishing his works. But I couldn't source it (I spent around 20 minutes trying.) so I decided that if it exists including this comment will likely make it appear from the depths of the Internet, if it doesn't it doesn't.) There comes a point where the best way to resolve an argument is to either cut it short or not have it.

EDIT: A large portion of this is how one defines the word "fool" if everyone who disagrees with you is a fool in your mind by default, then I doubt you're going to listen to anyone who expresses disagreement. Regardless of weather or not you engage them in conversation.

People as a general rule don't let the people they consider fools change their mind. Unless by proxy when they learn from their actions.