"In the mean time do all you can to cure him of Bashfullness which will ruin him in this impudent age; but beware he be not led into the opposite vice of self conceit or arrogance which is 1000 times w…"

"groped in the dark, misled by many an ignis fatuus, but nature has a weak side, if we can only find it out."

"one of the most ingenious, simple pieces of mechanism I have contrived."

"Nature can be conquered if we can but find her weak side."

"I know grief has its period; but I have much to suffer..."