"Old minds are like old horses; you must exercise them if you wish to keep them in working order."
I like this quote by John Adams, the 2nd President of the United States. I'm not old by any means, but its not exactly smart to think all old people are wise. Idiots grow old too. Are minds are like swords, you have to do some work to keep them sharp. I've heard stories of people forgetting how to speak languages they were once fluent in because they grew out of the practice. Never stop learning and thinking for yourself. Stupidity is a terrible disease.