Judaism acknowledges an afterlife, but does not have a single or systemic way of thinking about the afterlife. Judaism places its overwhelming stress on "Olam HaZeh" (this world) rather than "Olam haba" (the World to Come), and "speculations about the World to Come are peripheral to mainstream Judaism". In Pirkei Avot (Ethics of the Fathers), it is said that "One hour of penitence and good deeds in this world is better than all the life of the world to come; but one hour of spiritual repose in the world to come is better than all the life of this world", reflecting both a view of the significance of life on Earth and the spiritual repose granted to the righteous in the next world.