Their blindness and arrogance are as solid as an iron mountain

We Lannisters do have a certain pride," said Tyrion Lannister.

“Pride?” Catelyn snapped. His mocking tone and easy manner made her angry. “Arrogance, some might call it. Arrogance and avarice and lust for power.”

“My brother is undoubtedly arrogant,” Tyrion Lannister replied. “My father is the soul of avarice, and my sweet sister Cersei lusts for power with every waking breath. I, however, am innocent as a little lamb. Shall I bleat for you?” He grinned.

You can become blind by seeing each day as a similar one. Each day is a different one, each day brings a miracle of its own. It's just a matter of paying attention to this miracle.

These eyes, tho' clear To outward view of blemish or of spot, Bereft of light, their seeing have forgot, Nor to their idle orbs doth sight appear Of sun, or moon, or star, throughout the year, Or man, or woman. Yet I argue not Against Heaven's hand or will, not bate a jot Of heart or hope; but still bear up and steer Right onward.

And when a damp Fell round the path of Milton, in his hand The Thing became a trumpet; whence he blew Soul-animating strains--alas! too few.

He that is strucken blind cannot forget The precious treasure of his eyesight lost.