Men with the muckrake are often indispensable to the well-being of society, but only if they know when to stop raking the muck, and to look upward to the celestial crown above them. … If they gradually grow to feel that the whole world is nothing but muck their power of usefulness is gone.

Address on the laying of the cornerstone of the House Office Building, Washington, D.C. (14 April 1906)