Stubborn and ardent clinging to one's opinion is the best proof of stupidity.

He who establishes his argument by noise and command shows that his reason is weak.

Nothing fixes a thing so intensely in the memory as the wish to forget it.

There is no conversation more boring than the one where everybody agrees.

Ignorance is the softest pillow on which a man can rest his head.

There are some defeats more triumphant than victories.

No wind serves him who addresses his voyage to no certain port.

Michel de Montaigne