"A mission statement is not something you write overnight... But fundamentally, your mission statement becomes your constitution, the solid expression of your vision and values. It becomes the criterion by which you measure everything else in your life."

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[E]very act of a delegated authority, contrary to the tenor of the commission under which it is exercised, is void. No legislative act, therefore, contrary to the Constitution, can be valid. To deny this, would be to affirm, that the deputy is greater than his principal; that the servant is above his master; that the representatives of the people are superior to the people themselves; that men acting by virtue of powers, may do not only what their powers do not authorize, but what they forbid.

— Alexander Hamilton