Answer:
Being able to interpret the letters on this screen proves that you have this quality.
Who spends the day at the window, goes to the table for meals. And hides at night?
Take one out and scratch my head I am now black but once was red.
I appear in the morning. But am always there. You can never see me. Though I am everywhere. By night I am gone, though I sometimes never was. Nothing can defeat me. But I am easily gone.
What goes up when the rain comes down?
What covers its face with its hands, speaks no language, yet most known what it's saying?