“Study hard so that you can master technology, which allows us to master nature.” — Che Guevara

It is unnecessary to say that Fidel Castro possesses the high qualities of a fighter and statesman: our path, our struggle, and our triumph we owed to his vision.

The guerrilla fighters should be required to go to bed and get up at fixed hours. Games that have no social function and that hurt the morale of the troops and the consumption of alcoholic drinks should both be prohibited.

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.

The peasant must always be helped technically, economically, morally and culturally. The guerrilla fighter will be a sort of guiding angel who has fallen into the zone, helping the poor always and bothering the rich as little as possible in the first phases of the war.