Ascesis: The Saviors of God (Greek and Latin: Ασκητική. Salvatores dei) is a series of "spiritual exercises" written by Greek author Nikos Kazantzakis. It was first written between 1922 and 1923, while staying in Vienna and Berlin, and subsequently published in 1927 in the Athenian magazine Anayennisi (Renaissance). The text was later revised on various occasions and reached its final state in 1944. Source: Wikipedia (en)