The step between genius and insanity is very short.
Considered logically this concept is not identical with the totality of sense impressions referred to; but it is an arbitrary creation of the human (or animal) mind.
He who has never been deceived by a lie does not know the meaning of bliss.
Stupidity is a personal achievement which transcends national boundaries.
True knowledge comes with deep understanding of a topic and its inner workings.
Not until the creation and maintenance of decent conditions of life for all men are recognized and accepted as a common obligation of all men and all countries — not until then shall we, with a certain degree of justification, be able to speak of mankind as civilized.