President Biden defends the truth

Why it matters — and why it's only a start

President Joe Biden delivers his inauguration speech Wednesday at the US Capitol. (Patrick Semansky / AFP)

I.

A good and useful thing Joe Biden did upon being inaugurated as president of the United States was to speak up on behalf of the truth.

"Each of us has a duty and a responsibility as citizens, as Americans, and especially as leaders — leaders who h…