“There are three things extremely hard: steel, a diamond, and to know one's self.”

“There never was a good knife made of bad steel.”

“We are all born ignorant, but one must work hard to remain stupid.”

“So convenient a thing to be a reasonable creature, since it enables one to find or make a reason for every thing one has a mind to do.”

“In reality there is perhaps no one of our natural Passions so hard to subdue as Pride. Disguise it, struggle with it, beat it down, stifle it, mortify it as much as one pleases, it is still alive, and will now and then peek out and show itself.”

“No one cares what you know until they know that you care!”

“After three days houseguests and food begins to stink!”