The Causes of War (1973)
As quoted in Brezhnev Reconsidered (2002)by Edwin Bacon, Mark Sandle, p. 99
The Pathway of Peace (1923)
Context: There is no path to peace except as the will of peoples may open to it. The way of peace is through agreement, not through force. The question then is not of any ambitious scheme to prevent war, but simply of the constant effort, which is the highest task of statesmanship in relation to every possible cause of strife, to diminish a people's disposition to resort to force and to find a just and reasonable basis for accord. If the energy, ability, and sagacity equal to that now devoted to preparation for war could be concentrated upon such efforts aided by the urgent demands of an intelligent public opinion, addressed not to impossibilities but to the removal or adjustment of actual differences, we should make a sure approach to our goal.
Source: The Tin Flute (1945), P. 313
“In peace, prepare for war. In war, prepare for peace.”
Sometimes erroneously prepended to the opening line "The art of war is of vital importance to the State", but appears to be a variation of the Roman motto "Si vis pacem, para bellum". It's not clear who first misattributed this phrase to Sun Tzu. The earliest appearance of the phrase in Google Books is 1920, when it appeared in a pharmaceutical journal, but no attribution was given then.
Misattributed
“Peace cannot be kept by force; it can only be achieved by understanding.”
Variant: Peace cannot be kept by force. It can only be achieved by understanding.
“Freedom is a universal human desire… and a force for peace and prosperity in the world.”
"The Struggle for Human Rights and Human Freedom" https://www.youtube.com/watch?v=mW33AxBe06o (June 2013)
2010s, 2013
“Peace cannot be kept by force. It can only be achieved by understanding”
A Prescription for Hope (1985)
Context: Perhaps the signal accomplishment of the IPPNW has been the broad-based, free-flowing dialogue between physicians of the two contending power blocs. We heed Einstein's words, "Peace cannot be kept by force. It can only be achieved by understanding". In a world riven with confrontation and strife, IPPNW has become a model for cooperation among physicians from East and West, from North and South. Paranoid fantasies of a dehumanized adversary cannot withstand the common pursuit of healing and preventing illness.
Source: Songs of the Soul (1971)
Context: War forgets peace. Peace forgives war. War is the death of the life human. Peace is the birth of the Life Divine. Our vital passions want war. Our psychic emotions desire peace.
A remark to his private secretary, Lord Sandon, in May 1919. From Terence H. O'Brien, Milner, Viscount Milner of St James and Cape Town 1954-1925, 1979, Constable, p. 335.
