Just as it is true that humanity had to descend from a spiritual past, into materialism, so it is also true that it must rise again to spirituality. A spiritual world-conception alone can produce something that gives rise to harmony, peace and love. Even in this sphere, spiritual science can be of practical help in the highest possible way.
Source: Rudolf Steiner – GA 100 – Theosophy and Rosicrucianism: Lecture VIII: Supplementary Thoughts on the Law of Reincarnation and Karma – Kassel, 23rd June 1907
Painting by David Newbatt