Genuine ignorance is…profitable because it is likely to be accompanied by humility, curiosity, and open-mindedness; whereas ability to repeat catch-phrases, cant terms, familiar propositions, gives the conceit of learning and coats the mind with varnish waterproof to new ideas. – John Dewey

Pasted from <http://www.bearmarketinvestments.com/learning-from-the-great-crash-of-1929>