Mark

“When my information changes, I alter my conclusions. What do you do, sir?”
― John Maynard Keynes

“Your assumptions are your windows on the world. Scrub them off every once in a while, or the light won't come in.”
― Alan Alda

“Travel is fatal to prejudice, bigotry, and narrow-mindedness.”
― Mark Twain

“It is never too late to give up our prejudices. No way of thinking or doing, however ancient, can be trusted without proof. What everybody echoes or in silence passes by as true to-day may turn out to be falsehood to-morrow, mere smoke of opinion, which some had trusted for a cloud that would sprinkle fertilizing rain on their fields. What old people say you cannot do, you try and find that you can. Old deeds for old people, and new deeds for new.”
― Henry David Thoreau