Vulnerability is the ultimate test of confidence. It is the willingness to let others judge you and subject yourself to their mis-belief. To make yourself vulnerable requires a solid grounding that isn't dependent on other's approval.
Inevitably, great entrepreneurs live in a world of vision that is beyond what their peers will allow themselves to believe. Th author of this article is right on in describing great ideas as an expression of love. It is the same as athleticism. Great athletes push the boundaries of what human beings are capable of, and anyone who has pursued an athletic endeavor knows that when we reach the brink of our ability the motivation is primal and pure.
So much of what we do is in an effort to protect ourselves, maybe it would be worth it to spend more time exposing our weakness to the world and becoming more sensitive to honesty and integrity.