Men do not learn much from the lessons of history and that is the most important of all the lessons of history.
Knowledge is two-fold and consists not only in an affirmation of what is true but in the negation of that which is false.
Doubt is the vestibule through which all must pass before they can enter into...
Moderation is the inseparable companion of wisdom but with it genius has not...
War kills men and men deplore the loss but war also crushes bad principles...
Nothing is so threatening to conventional values as a man who does not...
Ignorance more frequently begets confidence than does knowledge: it is...
No thief, however skillful, can rob one of knowledge, and that is why...
