Man's most judicious trait is a good sense of what not to believe - Euripides

He that waits upon fortune is never sure of a dinner - Benjamin Franklin

The next best thing to knowing something is knowing where to find it - Dr Johnson

It is impossible to defeat an ignorant man by argument - William McAdoo

That men do not learn much from the lessons of history is the most important of all the lessons that history has to teach us - Aldous Huxley