“Common sense (which, in truth, is very uncommon) is the best sense I know of: abide by it; it will counsel you best.”
“There is nothing more uncommon than common sense.”
“Common sense has become an uncommon virtue.”
“Remember, the most common thing about common sense is how uncommon it is.”
“It's pretty amazing how uncommon common sense is.”
“On Lincoln: "A profound common sense is the best genius for statesmanship.”