Silence is argument carried out by other means.

Some suggestions for you :

I had a project for my life which involved 10 years of wandering, then some years of medical studies and, if any time was left, the great adventure of physics.

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

It is important to emphasize that guerrilla warfare is a war of the masses, a war of the people. The guerrilla band is an armed nucleus, the fighting vanguard of the people. It draws its great force from the mass of the people themselves.

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

Whenever death may surprise us, let it be welcome if our battle cry has reached even one receptive ear and another hand reaches out to take up our arms.

I am one of those people who believes that the solution to the world's problems is to be found behind the Iron Curtain.

I would probably have more in common with a whale than with a bourgeois married couple employed at worthy institutions that I would wipe from the face of the earth if it was given to me to do so.

Above all, always be capable of feeling deeply any injustice committed against anyone, anywhere in the world. This is the most beautiful quality in a revolutionary.

Passion is needed for any great work, and for the revolution, passion and audacity are required in big doses.

If you tremble with indignation at every injustice, then you are a comrade of mine.

I know you are here to kill me. Shoot, coward, you are only going to kill a man.

Remember that the revolution is what is important, and each one of us, alone, is worth nothing.

A political event was that I met Fidel Castro, the Cuban revolutionary. He is a young, intelligent guy, very sure of himself and extraordinarily audacious; I think we hit it off well.

The only passion that guides me is for the truth... I look at everything from this point of view.