In the dictionary of the seeker of truth there is no such thing as being "not successful." He is or should be an irrepressible optimist because of his immovable faith in the ultimate victory of Truth, which is God.
...most men have bound their eyes with one or another handkerchief, and attached themselves to some one of these communities of opinion. This conformity makes them not false in a few particulars, authors of a few lies, but false in all particulars. Their every truth is not quite true. Their two is not the real two, their four not the real four; so that every word they say chagrins us, and we know not where to begin to set them right.
RACK, n. An argumentative implement formerly much used in persuading devotees of a false faith to embrace the living truth. As a call to the unconverted the rack never had any particular efficacy, and is now held in light popular esteem.
You will find that the truth is often unpopular and the contest between agreeable fancy and disagreeable fact is unequal. For, in the vernacular, we Americans are suckers for good news.
It is only those who are in constant revolt that discover what is true, not the man who conforms, who follows some tradition. It is only when you are constantly inquiring, constantly observing, constantly learning, that you find truth, God, or love.