He was older and so he didn't have to go but he felt he wanted to do his duty.

BBC: WWI generation

When at last he decided to do his duty, in 2008 and occasionally later, the eggs failed to hatch.

ECONOMIST: Nora Ephron and Lonesome George

He wanted to do his duty.

BBC: WWI generation

Kevorkian argued Monday in his opening statement that he did not intend to kill Youk, but rather felt compelled to do so because his duty as a physician demanded it.

CNN: Kevorkian Case: Video of killing shown to jury

"We determined that his decision to do his minimum legal duty and not to do more to follow up constituted a failure of leadership by Coach Paterno, " the board of trustees said in a report that explained his firing.

CNN: STORY HIGHLIGHTS

Nine members of his own parliamentary party then issued a counter-petition eagerly upholding his right and duty to do so.

ECONOMIST: Israel v Iran

Any manager who determines in his judgment that achievement of the minority brokerage goals is not consistent with his best execution duty may simply refuse to do business with minority brokers.

FORBES: Minority-Owned Brokerages vs. Pension Brokers: Fighting for the Same Commission Dollars (January 1, 2002 )

As mayor of Boston, Menino has a First Amendment right, and perhaps even a duty, to express his views, as all political figures do.

CNN: Chick-fil-A and free speech