Education: that which reveals to the wise, and conceals from the stupid, the vast limits of their knowledge.
Mark TwainThe man who is a pessimist before 48 knows too much; if he is an optimist after it, he knows too little.
Mark TwainWhen one has tasted watermelons, one knows what angels eat. It was not a Southern watermelon that Eve took; we know it because she repented.
Mark Twain