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.

Some suggestions for you :

I could become very rich in Guatemala but by the low method of ratifying my title, opening a clinic, and specialising in allergies. To do that would be the most horrible betrayal of the two 'I's' struggling inside me: the socialist and the traveller.

Silence is argument carried out by other means.

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.

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

I don't care if I fall as long as someone else picks up my gun and keeps on shooting.

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

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

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

Study hard so that you can master technology, which allows us to master nature.

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

The true revolutionary is guided by a great feeling of love. It is impossible to think of a genuine revolutionary lacking this quality.

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 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.