Fidel Castro — "The greatest challenge facing humanity is the preservation of the environment."

"We are not against the American people. We are against the policies of the American government."

"The revolution is not a dinner party, nor an essay, nor a painting, nor a piece of embroidery; it cannot be so refined, so leisurely and gentle, so temperate, kind, courteous, restrained and magnanimo…"

"The duty of every progressive government is to support the liberation movements of the world."

"The revolution will be victorious, or it will be defeated, but it will never be betrayed."

"The imperialists will never forgive us for making a socialist revolution 90 miles from their coast."