The first principle is that you must not fool yourself - and you are the easiest person to fool.
Richard Feynman (1918 - 1988)
I was gratified to be able to answer promptly. I said I don't know.
Mark Twain (1835 - 1910)
Nothing ever goes away.
Barry Commoner (1917 - )
Because things are the way they are, things will not stay the way they are.
Bertolt Brecht (1898 - 1956)
I thank God I am as honest as any man living that is an old man and no honester than I.
William Shakespeare (1564 - 1616), "Much Ado about Nothing", Act 3 scene 1