"How can one attain fiery initiation without actual struggle? How can one pass through life without a real battle? Only a low understanding can have a conception of higher attainment without tension. To pass through life and attain means to pass along the edge of the abyss, means to pass through sorrow and tension. Just as the Cosmic Laboratory transmutes these energies of the heart, so do human souls pass through purgatory on Earth. Without this fiery attachment to Cosmic Fire the heart cannot know initiation into the Higher World. On the path to the Fiery World one must remember about the purgatory of life."
January 1, 1970
https://en.wikiquote.org/wiki/Purgatory