" A business leader who exemplified good work would be somebody who understood himself or herself, understood the corporation or company that they were in very well, knew something about their history, understood the domain—the sector in which they’re working, which could be anything from transportation to widgets—and had some sense of the mega-trends going on in the world. You cannot be an excellent leader unless you’ve thought about this kind of knowledge, so that’s excellence. "

― Daniel Goleman , The Executive Edge: An Insider's Guide to Outstanding Leadership