“We cannot be sure of having something to live for unless we are willing to die for it.”

“What do we leave behind when we cross each frontier? Each moment seems split in two: melancholy for what was left behind and the excitement of entering a new land.”

“When asked whether or not we are Marxists, our position is the same as that of a physicist, when asked if he is a “Newtonian” or of a biologist when asked if he is a “Pasteurian.”

“The revolution is not an apple that falls when ripe. You have to make it fall.”

“The walls of the educational system must come down. Education should not be a privilege, so the children of those who have money can study.”

“There are no boundaries in this struggle to the death. We cannot be indifferent to what happens anywhere in the world, for a victory by any country over imperialism is our victory; just as any country's defeat is a defeat for all of us.”

“Be realistic, demand the impossible!”