Quotes   Understanding   Authors Glossary The noblest pleasure is the joy of understanding. Leonardo da Vinci Love is life. All, everything that I understand, I understand only because I love. Leo Tolstoy Knowing yourself is the beginning of all wisdom. Aristotle Look deep into nature, and you will understand everything better. Albert Einstein Begin challenging your own assumptions. Your assumptions are your windows on the world. Scrub them off every once in awhile, or the light won't come in. Alan Alda