We must strive every day so that this love of living humanity is transformed into actual deeds, into acts that serve as examples, as a moving force.

We should not go to the [poor countries] and say: 'We come to ... teach you our science, to show you your errors.' ... We should go instead with an inquiring mind and a humble spirit to learn [from] these people.

We have no right to believe that freedom can be won without struggle.

It's a sad thing not to have friends, but it is even sadder not to have enemies.

Why does the guerrilla fighter fight? We must come to the inevitable conclusion that the guerrilla fighter is a social reformer, that he takes up arms responding to the angry protest of the people against their oppressors, and that he fights in order to change the social system that keeps all his unarmed brothers in ignominy and misery.

There is one government with which we keep diplomatic relations, the government of Mexico, with which we have good relations. Our systems are different. We respect their system.

Our youth must always be free, discussing and exchanging ideas concerned with what is happening throughout the entire world.