The History of James Watt
"James Watt, I never saw such an idle boy; take a book or employ yourself usefully; for the last hour you have not spoken a word, but taken off the lid of that kettle and put it on again, holding now a cup and now a silver spoon over the steam, watching how it rises from the spout, and catching the drops of water it turns into. Are you not ashamed to spend your time in this way?"