#1: You see things; and you say, 'Why?' But I dream things that never were; and I say, "Why not?" — George Bernard Shaw
#2: "Do, or do not. There is no 'try.'" — Jedi Master Yoda
I think both of the quotes compel someone to just go for it — to take action. Why not be innovative and forward thinking? Why not go to something you haven't? Why not be brave? Why not take a chance? Why not try something new? What do you have to lose?
These are all the excuses we give ourselves as we become older and more established. We lose our ability to take a risk, to fail if necessary. Yet risk-taking is part of self-improvement. It's certainly part of any technological innovation or paradigm shift.
I also see myself on the other side, being stubborn and "not wanting to." I see myself becoming part of the problem by denying the very ideas or solutions that ARE there. Perhaps it's laziness or cynicism. Perhaps it's being tired and having other priorities. However, when you stop being willing to look at the other side, you certainly can't even make progress.