Albert Einstein, besides being a genius, was also a decent tipper. The courier given this note might not have known it at the time, though.

“A calm and modest life brings more happiness than the pursuit of success combined with constant restlessness.” – Albert Einstein

For a piece of hotel stationery with that sage advice scrawled in German and predicted by auction house experts to land its seller upwards of $8,000 (U.S.), the now-former owner of Albert Einstein’s hand-written ‘theory of happiness’ must be grinning from ear-to-ear with its winning bid: $1.56 million (U.S.). Given to a messenger in a Japanese hotel in November of 1922, the circumstances as to why Einstein wrote down the sentence are uncertain. Some think the Nobel prize-winning physicist did not have money on him to offer cash, while others suggest the individual was gifted the note after following Japanese etiquette of politely declining a monetary tip.