Nietzsche, Thus Spoke Zarathustra -- Blindness

This is a graphic work from the series 'Thus spoke Zarathustra' created by me in 2009. I dedicated this graphic series to Franco Volpi. He was Italian philosopher, Professor of Philosophy at the University of Padua, translator and editor.

2016-06-02-1464881887-4030299-nietzschebylenahades2.jpg'And the blindness of the blind one, and his seeking and groping, shall yet testify to the power of the sun into which he hath gazed, did ye know that before?' A graphic work from the series 'Thus spoke Zarathustra' by Lena Hades. Photo Credit: Lena Hades

The work was entitled so 'And the blindness of the blind one, and his seeking and groping, shall yet testify to the power of the sun into which he hath gazed, --did ye know that before?' Now I'm going to talk about this work. What does this aphorism mean? What is it -- the blindness of the blind one according to Nietzsche?
I think this is a state of mind, when a man or a woman knows everything about the world at large, but he or she can not change anything in the world. Ecclesiastes said a similar thought that 'for in much wisdom is much grief: and he that increaseth knowledge increaseth sorrow'. So the state of impuissance is a dreadful thing, it's awful to feel helpless, to know everything and can do nothing.