It was hard to decide which was more likable, the amoeba or the paramecium. There was a certain charm in being of only one cell and another charm in wiggling. Charles Darwin was rather likeable too. He felt that over a great span of time— a span so great that it can take your breath away if you think about it too clearly— simple organisms evolve into more complex ones. The amoeba doesn’t have to decide what to have for lunch but the chipmunk in the road has to decide whether to run this way—no! that way!— and you have to decide whether to swerve or just hold your breath. The necessity of deciding is at the origin of thinking. (I think!) Lying in bed this morning, trying to decide whether to get up and write down these thoughts, I hesitated because I wondered.