I didn't have very good energy on Monday. I was dragging, the students were lethargic... just not a good combo. Last night, after my three-hour astro lecture, a student came up to me and told me that I had amazing amounts of energy. He thanked me and told me how important it was for the evening students to have enthusiastic instructors. With his words, this semester is looking up. Have I mentioned how much I enjoy my evening classes?