New ideas and concepts can only enter your mind when you open your mind. A closed mind only locks the door that imprisons your mentality.
Narrow-mindedness only cuts off opportunities and lines of communication.
We should all encourage our children to develop their imagination. Remember it was someone's imagination that created this website so you can read this article from. It was someone's imagination that created the Airplane, the automobile, a flight to the moon. When we open our mind we give our imagination permission the freedom to act. And when we have this freedom we can create a vision for our life.
A stagnant personality is a sign of a closed mind. Closed minds will allow progress to pass it by and can never take advantage of the opportunities that progress has to offer.
There is a rule of success which states "Whatever the mind can conceive and believe, it can achieve." Any person gifted with an open mind goes on to achieve brilliant feats in all professions, while the person with a closed mind still shouts "impossible."
Don't allow the naysayer discourage the dreams you may have. It's been proven through feats like the creation of the airplane and sending people to the moon that all things are possible and it's only a matter of time before dreams like these will manifest itself into the material world. There will be a time where the answer will be given to us for the cause of cancer and its subsequent cure for it.
Are you going to be among the group that says "I can" and "It will be done?" Or are you going to be among the group that says "Nobody can" and "that's impossible?"