Grover Cleveland Quote

Officeholders are the agents of the people, not their masters. Not only is their time and labor due to the Government, but they should scrupulously avoid in their political action, as well as in the discharge of their official duty, offending by a display of obtrusive partisanship their neighbors who have relations with them as public officials.

Message to the heads of departments in the service of the US Government (14 July 1886).