IN 1896 my great-great-grandfather left his hometown, Chattanooga, and traveled north to purchase a small, fading newspaper in New York.

The moment was not unlike our own. Technological, economic and social turmoil were upending the traditions of the country. People trying to understand these changes and their implications found themselves confused by polarized politics and by a partisan press more focused on advancing its own interests than on informing the public.

Against this backdrop Adolph Ochs saw the need for a different kind of newspaper, and he committed The New York Times to the then-radical idea that still animates it today. He vowed that The Times would be fiercely independent, dedicated to journalism of the highest integrity and devoted to the public welfare.

His vision for the news report: “to give the news impartially, without fear or favor, regardless of party, sect, or interests involved.” His vision for the opinion report: “to invite intelligent discussion from all shades of opinion.” Adolph Ochs

This mission feels particularly urgent to me today as I begin my work as publisher of The New York Times. Our society is again being reshaped by political, technological and environmental forces that demand deep scrutiny and careful explanation. More than 120 years after Adolph Ochs’s vision was printed in these pages, the need for independent, courageous, trustworthy journalism is as great as it’s ever been.

This is a period of exciting innovation and growth at The Times. Our report is stronger than ever, thanks to investments in new forms of journalism like interactive graphics, podcasting and digital video and even greater spending in areas like investigative, international and beat reporting. Our audience, once confined to a single city, now stretches around the globe.

This is also, of course, a period of profound challenge for The Times, for the news media more broadly, and for everyone who believes that journalism sustains a healthy society.

There was a reason freedom of speech and freedom of the press were placed first among our essential rights. Our founders understood that the free exchange of ideas and the ability to hold power to account were prerequisites for a successful democracy. But a dangerous confluence of forces is threatening the press’s central role in helping people understand and engage with the world around them.

The business model that long supported the hard and expensive work of original reporting is eroding, forcing news organizations of all shapes and sizes to cut their reporting staffs and scale back their ambitions. Misinformation is rising and trust in the media is declining as technology platforms elevate clickbait, rumor and propaganda over real journalism, and politicians jockey for advantage by inflaming suspicion of the press. Growing polarization is jeopardizing even the foundational assumption of common truths, the stuff that binds a society together.

Like our predecessors at The Times, my colleagues and I will not give in to these forces.

The New York Times headquarters. Jeenah Moon for The New York Times

The Times will continue to search for the most important stories of our era with curiosity, courage and empathy — because we believe that improving the world starts with understanding it. The Times will continue to resist polarization and groupthink by giving voice to the breadth of ideas and experiences — because we believe journalism should help people think for themselves. The Times will hold itself to the highest standards of independence, rigor and fairness — because we believe trust is the most precious asset we have. The Times will do all of this without fear or favor — because we believe truth should be pursued wherever it leads.

These values guided my father and his predecessors as publisher as they steered this company through war, economic crisis, technological upheaval and major societal shifts. These same values sustained them as they stood up to presidents; battled for the rights of a free press in court; and overrode the financial interests of our business in favor of our journalistic principles.

The challenge before me is to ensure The Times safeguards those values while embracing the imperative to adapt to a changing world. I’ve spent most of my career as a newspaper reporter, but I’ve also been a champion of The Times’s digital evolution. I’m protective of our best traditions, and I look to the future with excitement and optimism.

Much will change in the years ahead, and I believe those changes will lead to a report that is richer and more vibrant than anything we could have dreamed up in ink and paper. What won’t change: We will continue to give reporters the resources to dig into a single story for months at a time. We will continue to support reporters in every corner of the world as they bear witness to unfolding events, sometimes at great personal risk. We will continue to infuse our journalism with expertise by having lawyers cover law, doctors cover health and veterans cover war. We will continue to search for the most compelling ways to tell stories, from prose to virtual reality to whatever comes next. We will continue to put the fairness and accuracy of everything we publish above all else — and in the inevitable moments we fall short, we will continue to own up to our mistakes, and we’ll strive to do better.

We believe this is the journalism our world needs and our readers deserve. That has been the guiding vision for The New York Times across five generations and more than 120 years. Today we renew that commitment.