Writing on the window

A paraphrase of a Bible verse, or possibly a mash-up of several Bible verses; it was the first thing that came to mind. I like writing on windows with whiteboard pens. I wonder if you can see it from the street.

I did lots of learning and teaching today - and I wasn't even in uni or in the school! I was reading up on telescope designs, and I'm finally beginning to understand why telescopes like the VLA work. In the afternoon my favourite pupil came by to learn some maths. He told me that apparently the brain has no inherent mathematical ability; the brain has sections for language and art, for example, but not maths. I suppose that's why kids only start getting to grips with sums long after they can already talk, write, and draw.