Always regard every man as an end in himself, and never use him merely as a means to your ends [i.e., respect that each person has a life and purpose that is their own; do not treat people as objects to be exploited].

The question is not so much whether there is life on Mars as whether it will continue to be possible to live on Earth

But although all our knowledge begins with experience, it does not follow that it arises from experience.

Freedom is that faculty that enlarges the usefulness of all other faculties.

Better the whole people perish than that injustice be done

It is the Land of Truth (enchanted name!), surrounded by a wide and stormy ocean, the true home of illusion, where many a fog bank and ice, that soon melts away, tempt us to believe in new lands, while constantly deceiving the adventurous mariner with vain hopes, and involving him in adventures which he can never leave, yet never bring to an end.

Great minds think for themselves.