Perhaps, indeed, there are no truly universal ethics: or to put it more precisely, the ways in which ethical principles are interpreted will inevitab… - Howard Gardner

Both science and history are moving targets. Scholars in the twenty-first century are much more aware than those of earlier generations that scientists operate under the influence of powerful metaphors (science as exploration, discovery, documentation, thrust and counterthrust), and that both the scope and the tools of history undergo continual changes. Still, most scientists and most historians would concur that the broad strokes I've sketched, when viewed from sufficient distance, are accurately rendered—that is, that science and history are each in pursuit of statements that represent the truths ascertained by their respective disciplines

"Embracing a different vocabulary, Mihaly Csikszentmihalyi has described a highly sought-after affective state called the flow state or flow experience. In such intrinsically motivating experiences, which can occur in any domain of activity, people report themselves as fully engaged with and absorbed by the object of their attention. In one sense, those "in flow" are not conscious of the experience at the moment; on reflection, however, such people feel that they have been fully alive, totally realized, and involved in a "peak experience." Individuals who regularly engage in creative activities often report that they seek such states; the prospect of such "periods of flow" can be so intense that individuals will exert considerable practice and effort, and even tolerate physical or psychological pain, in pursuit thereof. Committed writers may claim that they hate the time spent chained to their desks, but the thought that they would not have the opportunity to attain occasional periods of flow while writing proves devastating."

Some leaders seek power for its own sake; some leaders seek power in order to increase their own resources or those of family, friends, and close associates. Those are not the leaders whom I admire, nor are they the leaders that young people should emulate. As I make clear in the pages that follow, the key to effective leadership is amoral: The skills that I describe can be used for the ends of a Nelson Mandela, or for the ends of Osama bin Laden. But once we turn from description to prescription, it is clear that, as individuals and as members of broader communities, we should do all that we can to increase the incidence of good leaders — individuals who are engaged, excellent, and dedicated to the pursuit of ethical ends.