Dwight Eisenhower actually said...
If we are sufficiently devoted to the cause of peace, to the kind of progress of which I speak, we will be strong, and then we will be able to cooperate with others, because only strength can cooperate--weakness cannot cooperate, it can only beg.
Context
Remarks at Ceremonies Commemorating the Discovery of the Old Man of the Mountain, Franconia Notch, New Hampshire.
06/23/1955