Common sense is the collection of prejudices acquired by age eighteen. Albert Einstein
Common sense in an uncommon degree is what the world calls wisdom. Samuel Taylor Coleridge.
Common sense is instinct. Enough of it is genius. George Bernard Shaw
Common sense is the measure of the possible; it is composed of experience and prevision; it is calculation applied to life. Henri Frederic Amiel
Common sense is the most fairly distributed thing in the world, for each one thinks he is so well-endowed with it that even those who are hardest to satisfy in all other matters are not in the habit of desiring more of it than they already have. Rene Descartes
Why level downward to our dullest perception always, and praise that as common sense? The commonest sense is the sense of men asleep, which they express by snoring. Henry David Thoreau
It is common sense to take a method and try it. If it fails, admit it frankly and try another. But above all, try something. Franklin D Roosevelt