"I can think of nothing else than this machine."

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

"He says that he got the idea from a lobster's tail."

"I have spent more time fixing other men's mistakes than making my own."

"The power of steam is like a wild horse; it must be harnessed with precision."