Leading figures of modern Greek literature include Dionysios Solomos, Andreas Kalvos, Angelos Sikelianos, Emmanuel Rhoides, Demetrius Vikelas, Kostis Palamas, Penelope Delta, Yannis Ritsos, Alexandros Papadiamantis, Nikos Kazantzakis, Andreas Embeirikos, Kostas Karyotakis, Gregorios Xenopoulos, Constantine P. Cavafy, Nikos Kavvadias, Kostas Varnalis and Kiki Dimoula. Two Greek authors have been awarded the Nobel Prize in Literature: George Seferis in 1963 and Odysseas Elytis in 1979.