War? War is an organized bore.

Science is the topography of ignorance. From a few elevated points we triangulate vast spaces, inclosing infinite unknown details. We cast the lead, and draw up a little sand from abysses we may never reach with our dredges.

Every man is an omnibus in which his ancestors ride.

To be master of any branch of knowledge, you must master those which lie next to it, and thus to know anything you must know all.

Longevity is having a chronic disease - and taking care of it.

If there is any principle of the Constitution that more imperatively calls for attachment than any other it is the principle of free thought, not free thought for those who agree with us but freedom for the thought that we hate.

A river is more than an amenity, it is a treasure.