“We cannot rely exclusively on military power to assure our long-term security. Lasting peace is gained as justice and democracy advance.”

Source: The Art of War, Chapter IX · Movement and Development of Troops

Preface, page xix.
The Case for Democracy (2004, with Ron Dermer)

Remarks in an interview http://www.chinadaily.com.cn/english/doc/2005-05/19/content_444110.htm (May 5,2005) <br class="br">2005

2010s, Confederation Again (July 2018)

The Personality of Jesus (1932)
Context: The victims of greed and exploitation will never get justice solely by relying upon the vision and generosity of those who hold power and seek their own gain. Power is blinding and corrupting and causes the slave-owner to imagine that it is his duty to perpetuate slavery. The victims of imperialism, in a world where national egotism and greed are rampant, must resort to coercive action if they are to secure freedom and justice.

2014, Sixth State of the Union Address (January 2014)
Context: For while our relationship with Afghanistan will change, one thing will not: our resolve that terrorists do not launch attacks against our country. [... ] We have to remain vigilant. But I strongly believe our leadership and our security cannot depend on our outstanding military alone. As commander in chief, I have used force when needed to protect the American people, and I will never hesitate to do so as long as I hold this office. But I will not send our troops into harm's way unless it is truly necessary, nor will I allow our sons and daughters to be mired in open-ended conflicts. We must fight the battles that need to be fought, not those that terrorists prefer from us -- large-scale deployments that drain our strength and may ultimately feed extremism. So even as we actively and aggressively pursue terrorist networks, through more targeted efforts and by building the capacity of our foreign partners, America must move off a permanent war footing. That's why I've imposed prudent limits on the use of drones, for we will not be safer if people abroad believe we strike within their countries without regard for the consequence.

Special Message to the Congress on the Threat to the Freedom of Europe (1948)

2015, Remarks to the People of Africa (July 2015)

2014, Statement on Cuban policy (December 2014)