Erwin Schrödinger, Nobel Prize in Physics in 1933, was not only a great scientist but a true humanist, who was interested in practically all aspects of culture and art. A lover of poetry, he himself expressed himself in this literary genre collecting part of his poems in a book in 1949. In the selection presented here, other poems that had been scattered until now have been added, as well as a fake dialogue by Galileo, also due to his pen ?all this translated for the first time into the Spanish language?. The subtlety and humor found in these writings was not absent from his scientific work: enormously popular is his fictitious experiment dealing with an aspect of quantum theory, according to which a cat could be both alive and dead in a cash register.