The Greatest Obstacle to Discovery Is Not Ignorance -it Is the Illusion of Knowledge. Posted 20/11/2017 · Add Comment Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Google+ (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Reddit (Opens in new window) Related Posts The Greatest Example of Courage Is the Willingness to Face the Falsity of Inherited Convictions The Function of Leadership Is to Produce More Leaders, Not More Followers. What Water Is to the Body, Purpose Is to the Mind.