Common sense is the collection of prejudices acquired by age eighteen.
Albert Einstein (1879 - 1955), (attributed)
Stupid is forever, ignorance can be fixed.
The last time anybody made a list of the top hundred character attributes of New Yorkers, common sense snuck in at number 79.
Douglas Adams (1952 - 2001), "Mostly Harmless"
Everybody gets so much information all day long that they lose their common sense.
Gertrude Stein (1874 - 1946)
[Common sense] is the best sense I know of.
Lord Chesterfield (1694 - 1773)
The freethinking of one age is the common sense of the next.
Matthew Arnold (1822 - 1888), 'God and the Bible,' 1875
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.
Oscar Wilde (1854 - 1900), The Picture of Dorian Gray, 1891
Nothing astonishes men so much as common sense and plain dealing.
Ralph Waldo Emerson (1803 - 1882), 'Art,' 1841
If an idea's worth having once, it's worth having twice.
Tom Stoppard (1937 - )