"You can observe a lot by just watching." - Yogi Berra

"You can observe a lot just by watching." - Yogi Berra, attributed

"Nothing has such power to broaden the mind as the ability to investigate systematically and truly all that comes under thy observation in life." - Marcus Aurelius

"Civilisation advances by extending the number of important operations which we can perform without thinking about them." - Alfred North Whitehead, An Introduction to Mathematics