Bruce Lee is best remembered as a movie star and exemplary martial artist, but he also had a profoundly philosophical mind that informed his approach to life. This quote on how our expectations shape our experiences was one of many guiding principles he wrote in his journals. And he makes a great point here: If we don’t expect or envision much, whether of ourselves or of those around us, we limit our potential. But by adopting a positive and ambitious outlook, we foster more potential and invite greater possibilities. Lee’s quote echoes the influence of Zen Buddhism on his life — he believed that in order to properly prepare for his very physical job, he also needed to take good care of his mind.