The 23rd of April was world book day(1), which first celebrated by UNESCO in 1995 in order to encourage reading and to promote the publishing industry and the protection of the intellectual property rights of authors. This date was chosen because it marks the death of three major writers: William Shakespeare (1564-1616), Miguel de Cervantes (1547-1616) and Inca Garcilaso de la Vega (1539-1616).