All You Need Is Ignorance...

Mark Twin may used "ignorance" as irony. But, here I am taking it literally. Because it is the "ignorance of fear" that take you to your destination and your desired goals. The kind of ignorance needed here is the one that allows you to ignore all the facts that make your dreams seem impossible.

Agreed-ignorance is not stupidity, it is to ignore people or things that are unimportant to what you are trying to achieve in your life. you should only be focused on what is beneficial to your progress. Just using what is relevant to you and don't let stereotypical concepts that society or people have forced upon everyone, effect you, your thoughts or your actions.
 

Because there is no one supportive to you, mostly people just try to put you down. In the era of keen competition, no one is your well wisher. There is a beast behind every beauty and there is an inhumanity behind every human. The world is arousing very selfishly.

You need enough ignorance to believe the impossible is possible and enough confidence to turn the impossibility into reality. The Wright Brothers were ignorant enough to think that man could fly and confident enough to make it happen. To succeed in life one should be ignorant of one's ignorance.
  

In the path of success every person always reach at a point where facts will convince you that you should stop. But, the person should choose to be ignorant of those facts which are barriers in the way to success and should keep going forward.