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Louis Brandeis called sunlight the best disinfectant

In a 1913 Harper's Weekly article Louis Brandeis wrote that "sunlight is said to be the best of disinfectants", a line that still defines the case for open government.

Louis Brandeis
Louis Brandeis · 1856–1941
Person
Louis Brandeis
Lived
1856–1941
Field
Law
From
American

The story

By 1913 Louis Brandeis was one of the best-known reformers in the United States. A Boston lawyer born to Jewish immigrants in Louisville, Kentucky, he had spent years fighting monopolies and corrupt practices, and he was serving as the chief economic adviser to the new president, Woodrow Wilson. That year a congressional investigation led by Representative Arsène Pujo had exposed how a few Wall Street bankers controlled vast sums of other people's savings.

Drawing on the Pujo Committee's testimony, Brandeis wrote a series of articles for Harper's Weekly, published between November 1913 and January 1914, suggesting ways to curb the power of large banks and the so-called money trust. He showed how the heads of a few banks sat on the boards of railways and industrial companies and steered their depositors' money to favour their own interests, squeezing out smaller competitors and inventors. He backed his case with detailed figures, in millions of dollars, showing how much of the nation's wealth specific banks and financiers such as J. P. Morgan now controlled.

In one article, titled 'What Publicity Can Do', he wrote the line on transparency for which he is best remembered more than a century later: 'Sunlight is said to be the best of disinfectants.' He added that electric light was the most efficient policeman. His point was that exposing hidden dealings to public view was one of the most effective ways to stop abuse.

The articles were gathered and published in 1914 as a book, Other People's Money and How the Bankers Use It, and reissued in 1933. Brandeis had long argued against the 'curse of bigness', warning that 'we may have democracy, or we may have wealth concentrated in the hands of a few, but we can't have both.'

His call for openness became a lasting principle. The line is frequently cited in support of regulation through disclosure obligations, and it remains one of the most quoted arguments for honest, open government.

Why it matters

Brandeis's argument that openness prevents abuse became a guiding idea behind financial disclosure rules and public transparency in democratic government.

About Louis Brandeis

“The People’s Lawyer” who became the first Jewish Supreme Court justice in 1916, wrote classic defences of free speech and privacy, and led American Zionism.

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Louis Brandeis
1856–1941 · Law
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Another act of tikkun olam. This is part of tikkun olam, the Jewish idea of repairing the world, and every one of us can add to it.

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