“One of the diseases of our spectacle-riddled culture is that we forget that the invisible life has all the human splendor of the visible one, and often more. I have had in mind all along, and have appealed to where possible, the humble bookworm, the amateur naturalist, the contemplative taxi driver. If you, like me, are naturally drawn to achievement, collect examples of ordinary thinkers—human beings whose splendor is known only to a few, their family, their neighbors, their coworkers. Settle back in awe from time to time, as I do, in thinking about the vast treasury of thought and experience that will never be available to us.”