"The man who never alters his opinion is like standing water, and breeds reptiles of the mind." ~ William Blake
 

"Speech is great, but silence is greater." ~ Thomas Carlyle

"Out, out, brief candle, 

Life's but a walking shadow, a poor player

That struts and frets his hour upon the stage,

And then is heard no more. It is a tale

Told by an idiot, full of sound and fury

Signifying nothing." ~ William Shakespeare

"The Kingdom of Ends has a population of one." ~ David Pugmire

"Where all men think alike, no one thinks very much." ~ Walter Lippmann

"Reality is negotiable." ~ Tim Ferriss

"I disapprove of what you say, but will defend to the death your right of saying it." ~ Voltaire