Intelligence Analyst "Words To Live By" -- #7 (SurveyMonkey.com)

This is the seventh of 10 surveys I intend to conduct to determine which are the "best" quotes, sayings and words of wisdom for intelligence analysts.

If you want more detail on why I am doing this, see the previous post.

Create your free online surveys with SurveyMonkey, the world's leading questionnaire tool.

Voting on the first six lists is still open:
List 1
List 2
List 3
List 4
List 5
List 6

The current frontrunners from the sixth list include (with the percentage representing the percent of respondents who said move it up the list):

"It is better to be vaguely right than precisely wrong." -- Carveth Read (55%)
"When the facts change, I change my mind. What do you do, sir?" -- John Maynard Keynes (76%)
"Summarizing is not the same as analyzing." -- Kathleen Cassedy (76%)
"What gets us into trouble is not what we don't know, it's what we know for sure that just ain't so." -- Mark Twain (67%)
"When you have eliminated the impossible, whatever remains, however improbable, must be the truth. -- Sherlock Holmes (59%)
"Have the courage for what you already know." -- Frederich Nietzsche (52%)
"Things are not always what they seem; the first appearance deceives many. The intelligence of a few perceives what has been carefully hidden." -- Phaedrus (64%)  

All other entries are currently below 50%.