“In 1991, I crossed party lines and supported the use of force against Saddam Hussein, but he was allowed to survive his defeat as the result of a calculation we all had reason to deeply regret for the ensuing decade. And we still do. So this time, if we resort to force, we must absolutely get it right. It must be an action set up carefully and on the basis of the most realistic concepts. Failure cannot be an option, which means that we must be prepared to go the limit. And wishful thinking based on best-case scenarios or excessively literal transfers of recent experience to different conditions would be a recipe for disaster.”

Speech to the floor of the Senate, Congressional Record, November 9, 1997 http://frwebgate3.access.gpo.gov/cgi-bin/waisgate.cgi?WAISdocID=14015820865+3+0+0&WAISaction=retrieve

Kalki : or The Future of Civilization (1929)
Context: War with its devastated fields and ruined cities, with its millions of dead and more millions of maimed and wounded, its broken-hearted and defiled women and its starved children bereft of their natural protection, its hate and atmosphere of lies and intrigue, is an outrage on all that is human. So long as this devil-dance does not disgust us, we cannot pretend to be civilized. It is no good preventing cruelty to animals and building hospitals for the sick and poor houses for the destitute so long as we willing to mow down masses of men by machine-guns and poison non-combatants, including the aged and the infirm, women and children — and all for what? For the glory of God and the honour of the nation!
It is quite true that we attempt to regulate war, as we cannot suppress it; but the attempt cannot succeed. For war symbolizes the spirit of strife between two opposing national units which is to be settled by force. When we allow the use of force as the only argument to put down opposition, we cannot rightly discriminate between one kind of force and another. We must put down opposition by mobilizing all the forces at our disposal. There is no real difference between a stick and a sword, or gunpowder and poison gas. So long as it is the recognized method of putting down opposition, every nation will endeavour to make its destructive weapons more and more efficient. War is its only law add the highest virtue is to win, and every nation has to tread this terrific and deadly road. To approve of warfare but criticize its methods, it has been well said is like approving of the wolf eating the lamb but criticizing the table-manners. War is war and not a game of sport to be played according to rules.

2000s, 2003, Weekly radio address (March 2003)

Discussing Iran's strategy for advancing its nuclear program against the opposition of the international community
2004 speech to the Supreme Cultural Revolution Council

Source: On Freedom (1958)
Context: It is wrong to think that belief in freedom always leads to victory; we must always be prepared for it to lead to defeat. If we choose freedom, then we must be prepared to perish along with it. Poland fought for freedom as no other country did. The Czech nation was prepared to fight for its freedom in 1938; it was not lack of courage that sealed its fate. The Hungarian Revolution of 1956 — the work of young people with nothing to lose but their chains — triumphed and then ended in failure. … Democracy and freedom do not guarantee the millennium. No, we do not choose political freedom because it promises us this or that. We choose it because it makes possible the only dignified form of human coexistence, the only form in which we can be fully responsible for ourselves. Whether we realize its possibilities depends on all kinds of things — and above all on ourselves.

Variant translations
A military operation involves deception. Even though you are competent, appear to be incompetent. Though effective, appear to be ineffective.
Source: The Art of War, Chapter I · Detail Assessment and Planning

Stated http://www.fas.org/news/iraq/1998/02/19/98021907_tpo.html on NBC's Today Show (February 19, 1998)
1990s

Ultimatum to Iraq (17 March 2003) http://www.guardian.co.uk/world/2003/mar/18/iraq.usa1
2000s, 2003