"Wisdom is the right use of knowledge. To know is not to be wise. Many men know a great deal, and are all the greater fools for it. There is no fool so great a fool as a knowing fool. But to know how to use knowledge is to have wisdom." - Charles Haddon Spurgeon
"Not by age but by capacity is wisdom acquired. Where is the wisdom we have lost in knowledge? Where is the knowledge we have lost in information?" - T. S. Eliot
"It's pardonable to be defeated but never to be surprised" (Frederick the Great)
"Knowledge is of two kinds. We know a subject ourselves, or we know where we can find information upon it." (Dr Samuel Johnson)
"It's not the strongest species that survive, nor the most intelligent, but the ones most responsive to change" (Attributed to Charles Darwin but almost certainly not said by him - if you can find where he did say it, please let me know).
“We do not deal with certainties. The world of intelligence is the world of probabilities. Getting the information is not usually the most difficult task. What is difficult is putting upon it the right interpretation. Analysis is everything. James Bond is not the real world” (Issur Harel - the Israeli spy chief responsible for capturing Eichmann)
And one from one of the best CI thinkers - Leonard Fuld:
"Where money changes hands so does information"