In one of my earliest memories, on a warm sunny morning, I am in my school backyard with my teachers and schoolmates. Something catch my attention. On a sidewalk, I see a small, motionless lizard. Maybe it is injured, or perhaps it is already dead (it is in the nature of childhood memories to be uncertain). What I know is that I bend over it in awe: “There is a lizard!” I say to my friends with the typical enthusiasm for the small things of a six-year-old.