On sunny days the dog sun tans in my office, following the rectangle of light coming through the the balcony as it gradually passes across the room. I was feeling tired from four straight nights of a sick toddler so I thought I'd join him for a minute. The rectangle covered most of my body and it was very warm and bright. As I covered my eyes I remembered the last time I did this was on a beach in Hawaii. And I forgot for a moment that I had countless hours ahead of me of studying the constitution and that the rectangle of sunlight would be long gone before I finished.