I didn't have time to go take a photo specifically for this week's active assignment weekly assignment: enjoy the silence, but I took this photo for a talk I'm giving and it reminded me enough of silent studying that I thought perhaps it was worth submitting.
I know, for a lot of people, a mathematics textbook isn't about enjoying the silence, but it was for me. I was bored and very disappointed in first year university when the subject I thought I wanted to study turned out to be... uninspiring. I switched into math, and suddenly I was being offered courses that were challenging enough that it was worth some silent study. So that's why this fit the assignment for me.