Inamori Kazuo, the founder of Kyocera, described it with a formula: way of thinking times enthusiasm times ability. Ability and enthusiasm each run from 0 to 100 points. Way of thinking runs from minus 100 to plus 100.
A book of his sayings, quoted in President, draws the conclusion: Sainō wa netsui de kabā dekiru. Talent can be made up for with enthusiasm.