My grandfather was illiterate but a successful farmer, always first in adopting new stuff. Once, when he was visiting us, he asked me to buy him shaving cream, which he had forgotten to take. At that time, it was a novelty on the market. I just started to shave and used the old-fashioned soap and a brush as my father did. So I was a little puzzled. "One has to stay on top of progress," he answered.