His most known books are El Cristo de espaldas (Backwards Christ) (1952), Siervo sin tierra (Landless Servant) (1954), La penúltima hora (The Hour Before the Last) (1955), and Manuel Pacho (1962), which are mainly depictions of events related to the bipartisan violence in Colombia (La Violencia).
Other works are Cain (1969), El buen salvaje (The Good Savage) (1963), a book that won the Nadal Prize in 1965 and Historia de dos Hermanos (Two Brothers' History) (1977) among others.
"A long time ago, a tall, red faced, freckled man with eyes brightened by a weird chimera was knocking on the doors of the powerful ones.
This man held a secret he discovered in ancient Italian parchment scrolls and written in the language of Portuguese seamen.
One night when he begged for lodging at La Rabida Monastery appealing to their sense of pity, he said to the prior: given that the earth is round, if we go around the fearsome sea that lies towards the west, we will arrive eventually at the fabulous kingdom of spices."