It's no secret that humans have long been driven by the pursuit of happiness, which explains why some scientists and psychologists have dedicated their lives to studying the subject. Among those to weigh in on the topic was Albert Einstein, who revealed his theory on happiness in handwritten notes that recently went up for auction in Jerusalem.
As Quartz reports, the physicist was on a lecture tour in Japan in 1922 and had just learned that he would be awarded the Nobel Prize for physics. Einstein, who's best known for his theory of relativity, "tipped" a courier in the form of two notes written in his native tongue, German. (It's customary in Japan to refuse monetary tips, and it's possible that Einstein was also short on change, says AFP.)
The notes contained Einstein's musings on life, including his perspective on the relationship between success and happiness. On stationery from the Imperial Hotel Tokyo, the theoretical physicist advised that "a quiet and modest life brings more joy than a pursuit of success bound with constant unrest." Translation? Perhaps we, like many other experts, can deduce from Einstein that happiness is relative—whether that means choosing to balance a busy yet stress-free schedule or to start your day off slow, it's all in how you perceive happiness.
As for Einstein's other note? Written on a blank piece of paper is the simple phrase "Where there's a will, there's a way." Previous letters from the scientist were sold for $80,000, according to Phys.org, and while there's no telling how much these recently unearthed notes will sell for, it's clear that the advice is priceless.