Don't expect the theatre to satisfy the habits of its audience, but to change them.

You have to attack once the truth is too weak to defend itself.

Intelligence is not to make no mistakes, but quickly to see how to make them good.

When the leaders speak of peace, the common folk know war is coming.

Things take indeed a wondrous turn When learned men do stoop to learn.

The fanatics for progress often have too little appreciation of the existing.

Hungry man, reach for the book: it is a weapon.