And we must face the fact that the United States is neither omnipotent or omniscient — that we are only six percent of the world’s population — that we cannot impose our will upon the other ninety-four percent of mankind — that we cannot right every wrong or reverse each adversity — and that therefore there cannot be an American solution to every world problem.

John F. Kennedy (1917-1963) US President (1961-63)

Speech, University of Washington, Seattle (16 Nov 1961)