Here is an excerpt from an article written by Cynthia A. Montgomery, a Harvard Business School professor, who reflects on what she has learned from senior executives about the unique value that strategic leaders can bring to their companies. It is featured by The McKinsey Quarterly, published by McKinsey & Company. To read the complete article, check out the wealth of free resources, and register to receive email alerts, please click here.

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Seven years ago, I changed the focus of my strategy teaching at the Harvard Business School. After instructing MBAs for most of the previous quarter-century, I began teaching the accomplished executives and entrepreneurs who participate in Harvard’s flagship programs for business owners and leaders.

Shifting the center of my teaching to executive education changed the way I teach and write about strategy. I’ve been struck by how often executives, even experienced ones, get tripped up: they become so interested in the potential of new ventures, for example, that they underestimate harsh competitive realities or overlook how interrelated strategy and execution are. I’ve also learned, in conversations between class sessions (as well as in my work as a board director and corporate adviser) about the limits of analysis, the importance of being ready to reinvent a business, and the ongoing responsibility of leading strategy.

All of this learning speaks to the role of the strategist—as a meaning maker for companies, as a voice of reason, and as an operator. The richness of these roles, and their deep interconnections, underscore the fact that strategy is much more than a detached analytical exercise. Analysis has merit, to be sure, but it will never make strategy the vibrant core that animates everything a company is and does.

The strategist as meaning maker

I’ve taken to asking executives to list three words that come to mind when they hear the word strategy. Collectively, they have produced 109 words, frequently giving top billing to plan, direction, and competitive advantage. In more than 2,000 responses, only 2 had anything to do with people: one said leadership, another visionary. No one has ever mentioned strategist.

Downplaying the link between a leader and a strategy, or failing to recognize it at all, is a dangerous oversight that I tried to start remedying in a Harvard Business Review article four years ago and in my new book, The Strategist, whose thinking this article extends. After all, defining what an organization will be, and why and to whom that will matter, is at the heart of a leader’s role. Those who hope to sustain a strategic perspective must be ready to confront this basic challenge. It is perhaps easiest to see in single-business companies serving well-defined markets and building business models suited to particular competitive contexts. I know from experience, though, that the challenge is equally relevant at the top of diversified multinationals.

What is it, after all, that makes the whole of a company greater than the sum of its parts—and how do its systems and processes add value to the businesses within the fold? Nobel laureate Ronald Coase posed the problem this way: “The question which arises is whether it is possible to study the forces which determine the size of the firm. Why does the entrepreneur not organize one less transaction or one more?” These are largely the same questions: are the extra layers what justifies the existence of this complex firm? If so, why can’t the market take care of such transactions on its own? If there’s more to a company’s story, what is it, really?

In the last three decades, as strategy has moved to become a science, we have allowed these fundamental questions to slip away. We need to bring them back. It is the leader—the strategist as meaning maker—who must make the vital choices that determine a company’s very identity, who says, “This is our purpose, not that. This is who we will be. This is why our customers and clients will prefer a world with us rather than without us.” Others, inside and outside a company, will contribute in meaningful ways, but in the end it is the leader who bears responsibility for the choices that are made and indeed for the fact that choices are made at all.

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To read the complete article, please click here.

Cynthia A. Montgomery is the Timken Professor of Business Administration and immediate past chair of the Strategy Unit at Harvard Business School, where she’s been on the faculty for 20 years.  Her latest book is The Strategist: Be the Leader Your Business Needs, published by HarperBusiness (May 8, 2012).