"Common sense is what tells us the Earth is flat and the Sun goes around it."
"The freethinking of one age is the common sense of the next."
"Common sense ain't common."
"Common sense is the collection of prejudices acquired by age eighteen."
"The two World Wars came in part, like much modern literature and art, because men, whose nature is to tire of everything in turn, ... tired of common sense and civilization."
F. L. Lucas
"If an idea's worth having once, it's worth having twice."
"Common sense is very uncommon."
"Common sense is in spite of, not as the result of education."
"The philosophy of one century is the common sense of the next."
Henry Ward Beecher
"Common sense is instinct, and enough of it is genius."
"Stupid is forever, ignorance can be fixed."
"Nothing is more fairly distributed than common sense: no one thinks he needs more of it than he already has."
"Nowadays most people die of a sort of creeping common sense, and discover when it is too late that the only things one never regrets are one's mistakes."